diff --git a/.gitignore b/.gitignore
index 99f22b9..ea5f448 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,3 +52,4 @@ TryTitle.ps1
 data/Sheet10.txt
 data/Sheet20.txt
 ImportExcel-Copy.psm1
+TryCCFmt.ps1
diff --git a/New-ConditionalFormattingIconSet.ps1 b/New-ConditionalFormattingIconSet.ps1
new file mode 100644
index 0000000..80af420
--- /dev/null
+++ b/New-ConditionalFormattingIconSet.ps1
@@ -0,0 +1,54 @@
+function New-ConditionalFormattingIconSet {
+    param(
+        [Parameter(Mandatory=$true)]
+        $Address,
+        [ValidateSet("ThreeIconSet","FourIconSet","FiveIconSet")]
+        $ConditionalFormat        
+    )
+    
+    DynamicParam {       
+        $IconType = New-Object System.Management.Automation.ParameterAttribute
+        $IconType.Position = 2
+        $IconType.Mandatory = $true
+
+        $attributeCollection = New-Object System.Collections.ObjectModel.Collection[System.Attribute]
+                
+        $attributeCollection.Add($IconType)        
+
+        switch ($ConditionalFormat) {
+            "ThreeIconSet" {
+                $IconTypeParam = New-Object System.Management.Automation.RuntimeDefinedParameter('IconType', [OfficeOpenXml.ConditionalFormatting.eExcelconditionalFormatting3IconsSetType], $attributeCollection)                
+            }
+
+            "FourIconSet" {
+                $IconTypeParam = New-Object System.Management.Automation.RuntimeDefinedParameter('IconType', [OfficeOpenXml.ConditionalFormatting.eExcelconditionalFormatting4IconsSetType], $attributeCollection)                
+            }
+
+            "FiveIconSet" {
+                $IconTypeParam = New-Object System.Management.Automation.RuntimeDefinedParameter('IconType', [OfficeOpenXml.ConditionalFormatting.eExcelconditionalFormatting5IconsSetType], $attributeCollection)                
+            }
+        }
+
+        $paramDictionary = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary
+        
+        $paramDictionary.Add('IconType', $IconTypeParam)
+        
+        return $paramDictionary
+    }
+    
+    End {
+        
+        $bp = @{}+$PSBoundParameters
+
+        $obj = [PSCustomObject]@{
+            Address   = $Address
+            Formatter = $ConditionalFormat
+            IconType  = $bp.IconType
+        }
+
+        $obj.pstypenames.Clear()
+        $obj.pstypenames.Add("ConditionalFormatIconSet")
+        
+        $obj
+    }
+}
diff --git a/TryCCFmt.ps1 b/TryCCFmt.ps1
index 861de0d..dfc9981 100644
--- a/TryCCFmt.ps1
+++ b/TryCCFmt.ps1
@@ -12,6 +12,9 @@ if($r) {
 
 rm $fileName -Force -ErrorAction Ignore
 
+function get-rm { (Get-Random -Minimum 0 -Maximum 12) + 1}
+function get-rd { (Get-Random -Minimum 0 -Maximum 27) + 1}
+
 $pkg = New-Object OfficeOpenXml.ExcelPackage $fileName
 $workbook = $pkg.Workbook
 
@@ -25,10 +28,142 @@ foreach($col in 1..10) {
     }
 }
 
+#$ws.Cells[1,1].Value = "State"
+#$ws.Cells[1,2].Value = "Name"
+
+#$ws.Cells[2,1].Value = "CA"
+#$ws.Cells[2,2].Value = "California"
+
+#$ws.Cells[3,1].Value = "NY"
+#$ws.Cells[3,2].Value = "New York"
+
+#$ws.Cells[4,1].Value = "IL"
+#$ws.Cells[4,2].Value = "Illinois"
+
+#$ws.Cells[5,1].Value = "NH"
+#$ws.Cells[5,2].Value = "New Hampshire"
+
+
+#$rule = $ws.ConditionalFormatting.AddNotContainsText("B2:B5")
+#$rule.Style.Fill.BackgroundColor.Color = "red"
+#$rule.Text = 'New'
+#$rule.Formula = 'New'
+
+#$rule = $ws.ConditionalFormatting.AddEqual("B:B")
+#$rule.Style.Fill.BackgroundColor.Color = "red"
+#$rule.Formula = '"New York"'
+
+#$rule = $ws.ConditionalFormatting.AddEqual("B:B")
+#$rule.Style.Fill.BackgroundColor.Color = "Cyan"
+#$rule.Formula = '"Illinois"'
+
+
+#foreach($col in 1..10) {
+#    $ws.Cells[1,$col].Value = "Sample $col"
+#    
+#    foreach($row in 2..10) {
+#        
+#        if($row -eq 2 -or $row -eq 7) {
+#            $ws.Cells[$row,$col].Value = get-date
+#        } else {
+#            $ws.Cells[$row,$col].Value = get-date ("{0}/{1}/2015" -f (get-rm), (get-rd))
+#        }
+#
+#        $ws.Cells[$row,$col].Style.Numberformat.Format = "m/d/yyyy"
+#    }
+#}
+
+#$rule.Style.Font.Bold = $true
+
+#$rule = $ws.ConditionalFormatting.AddEqual("A2:J10")
+#$rule.Style.Fill.BackgroundColor.Color = "red"
+#$rule.Formula = "6"
+
+#$rule = $ws.ConditionalFormatting.AddEqual("A2:J10")
+#$rule.Style.Fill.BackgroundColor.Color = "cyan"
+#$rule.Formula = "4"
+
+
+#$r = $ws.ConditionalFormatting.AddThisWeek("A2:J10")
+#$r.Style.Font.Bold   = $true
+#$r.Style.Font.Italic = $true
+#$r.Style.Font.Color = [OfficeOpenXml.Style.Dxf.ExcelDxfColor]"Red"
+
+#$range = New-Object OfficeOpenXml.ExcelAddress "B2:B10"
+#$range = New-Object OfficeOpenXml.ExcelAddress "B2:B10"
+#$r = $ws.ConditionalFormatting.AddThreeColorScale("B2:B10")
+#$r = $ws.ConditionalFormatting.AddThreeColorScale("5:5")
+#$r.MiddleValue.Type  = "Percentile"
+#$r.MiddleValue.Value = 30
+#$r.StopIfTrue=$true
+
 #$range = New-Object OfficeOpenXml.ExcelAddress "A2:A10"
 
 #$IconSet = [OfficeOpenXml.ConditionalFormatting.eExcelconditionalFormatting3IconsSetType]::Flags
-$rulex = $ws.ConditionalFormatting.AddThreeIconSet("a2:a10", "Flags")
+#$IconSet = [OfficeOpenXml.ConditionalFormatting.eExcelconditionalFormatting4IconsSetType]::RedToBlack
+
+function Set-ConditionalFormatting {
+    param(
+        [Parameter(ValueFromPipeline=$true)]
+        [OfficeOpenXml.ExcelWorksheet]$targetWS,
+        $Address,
+        [ValidateSet("ThreeIconSet","FourIconSet","FiveIconSet")]
+        $ConditionalFormat        
+    )
+    
+    DynamicParam {       
+        $IconType = New-Object System.Management.Automation.ParameterAttribute
+        $IconType.Position = 2
+        $IconType.Mandatory = $true
+
+        $attributeCollection = New-Object System.Collections.ObjectModel.Collection[System.Attribute]
+                
+        $attributeCollection.Add($IconType)        
+
+        switch ($ConditionalFormat) {
+            "ThreeIconSet" {
+                $IconTypeParam = New-Object System.Management.Automation.RuntimeDefinedParameter('IconType', [OfficeOpenXml.ConditionalFormatting.eExcelconditionalFormatting3IconsSetType], $attributeCollection)                
+            }
+
+            "FourIconSet" {
+                $IconTypeParam = New-Object System.Management.Automation.RuntimeDefinedParameter('IconType', [OfficeOpenXml.ConditionalFormatting.eExcelconditionalFormatting4IconsSetType], $attributeCollection)                
+            }
+
+            "FiveIconSet" {
+                $IconTypeParam = New-Object System.Management.Automation.RuntimeDefinedParameter('IconType', [OfficeOpenXml.ConditionalFormatting.eExcelconditionalFormatting5IconsSetType], $attributeCollection)                
+            }
+        }
+
+        $paramDictionary = New-Object System.Management.Automation.RuntimeDefinedParameterDictionary
+        
+        $paramDictionary.Add('IconType', $IconTypeParam)
+        
+        return $paramDictionary
+    }
+    
+    Begin {
+        $bp = @{}+$PSBoundParameters        
+    }
+    Process {
+        $target = "Add$($ConditionalFormat)"
+        $null = ($ws.ConditionalFormatting).$target($Address, $bp.IconType)
+    }
+}
+
+$ws | Set-ConditionalFormatting -Address '3:3' -ConditionalFormat ThreeIconSet -IconType Symbols
+#$rulex = $ws.ConditionalFormatting.AddFourIconSet("B:C", 'RedToBlack')
+#$rulex.Reverse = $true
+
+
+# $rulex = $ws.ConditionalFormatting.AddThreeIconSet("a2:a10", "Flags")
+# $rulex = $ws.ConditionalFormatting.AddThreeIconSet("b2:b10", "Flags")
+#$r = $ws.ConditionalFormatting.AddThreeIconSet("D:D", "Flags")
+#$r = $ws.ConditionalFormatting.AddThreeIconSet("3:3", "Flags")
+#$r = $ws.ConditionalFormatting.AddThreeIconSet("6:6", "Flags")
+
+#$r = $ws.ConditionalFormatting.AddThreeIconSet("6:7", "Flags")
+#$r = $ws.ConditionalFormatting.AddThreeIconSet("B:D", "Flags")
+
 #$rule2 = $ws.ConditionalFormatting.AddDatabar("b2:b10", "blue")
 #$rule3 = $ws.ConditionalFormatting.AddNotEqual("c2:c10")
 #$rule3.Formula = "14"