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[#1]

I have a text parameter "ARM_TYPE" that kicks out a numaric parameter "ARM_ANGLE" through an ilogic rule. My problem is i need to have the rule kickout an error when (ARM_TYPE= "none"). I can do this by changing the "ARM_ANGLE" parameter from a Numaric to Text format (see below). The problem here is that "ARM_ANGLE" is used in several more ilogic rule calculations generating other parameter values which also need to kick out an "error"

I hope this makes sense

Thanks for the help,

Steve

If Parameter("ARM_TYPE") = "A995" Then
Parameter("ARM_ANGLE") = -12

ElseIf Parameter("ARM_TYPE") = "A1023" Then
Parameter("ARM_ANGLE") = -3.7

ElseIf Parameter("ARM_TYPE") = "A1081" Then
Parameter("ARM_ANGLE") = -44.1

ElseIf Parameter("ARM_TYPE") = "NONE" Then
Parameter("ARM_ANGLE") = "####"

End If 

[#2]

I hope i understand your question correctly, here is some code you can try.

I changed your if's to a select case. For me this works easier.

Select Case Parameter("ARM_TYPE")

Case  "A995"
Parameter("ARM_ANGLE") = -12
Case "A1023"
Parameter("ARM_ANGLE") = -3.7
Case "A1081"
Parameter("ARM_ANGLE") = -44.1
Case "NONE"
'if ARM_TYPE IS NONE then show messagebox with an warning message
MessageBox.Show("ARM_TYPE = NONE", "Error text",MessageBoxButtons.OK,MessageBoxIcon.Warning)
'this is some extra code to choose an other arm_length value
Parameter("ARM_TYPE") = InputListBox("Prompt", MultiValue.List("ARM_TYPE"), Parameter("ARM_TYPE"), Title := "Title", ListName := "List")

End Select

If you need more help, let me know.

Rob.

[#3 · Accepted solution]

Rob thanks for the help.    I  need the parameter "ARM_ANGLE" to read a non numeric value such as #### or show an empty box.  I have other parameters that use the "ARM_ANGLE" to calculate their values such as the "WELD_ANGLE" which also need to show #### or an empty box if no arm is selected or no value for "ARM_ANGLE" is entered.

I think I can do this by changing all the parameters to a text format instead of numeric.

I did like the idea of a message box but I can have it ask to enter an "ARM_ANGLE" value.

Thanks again for the help,

Steve