hi there,

i have a part file (1.sldprt), and there are 3 dimensions in this part (length_cubic@extrude, width_cubic@sketch1 and height_cubic@sketch1, a cubic with 3 dimensions actually). Besides, there is an assembly.

What i'm trying to do is, to add this part with different values of the 3 dimensions (as different configurations of this part) into the assembly. In other words, the assembly is composed by various configurations of this part file.

Here's the code:

********************************************************************************

Sub CreateAssembly( ... Byref m As Integer, Byref n As Integer, Byref dimension() As Double)

     ...

     For i=0 to m

          For j=0 to n

               If ...... then

                    length=dimension(0)

                    width=dimension(1)

                    height=dimension(2)

                    component2=AddCom2Assembly(path, title, x, y, z, length, width, height)

               end if

          Next

     Next

     ...

End Sub

Function AddCom2Assembly(ByVal path As String, ByVal assTitle As String, _

                             ByVal x As Double, ByVal y As Double, ByVal z As Double, _

                             ByVal length As Double, ByVal width As Double, ByVal height As Double) As Component2

        ......

        Dim swconfigMgr As ConfigurationManager

        Dim swConfig As Configuration

        model = iSwApp.OpenDoc6(path, swDocumentTypes_e.swDocPART, swOpenDocOptions_e.swOpenDocOptions_Silent, "", 0, 0

        model = SwApp.ActiveDoc

        swconfigMgr = model.ConfigurationManager

        Dim confName As String = CStr(length) + " * " + CStr(width) + " * " + CStr(height)

        swConfig = swconfigMgr.AddConfiguration(confName, "comment", confName + "alterName", swConfigurationOptions2_e.swConfigOption_UseAlternateName, "", confName + "testaddingConfig")

        swConfig = swconfigMgr.ActiveConfiguration

        Dim swDim(3) As Dimension

        swDim(0) = model.Parameter("length_cubic@extrude")

        swDim(1) = model.Parameter("width_cubic@Sketch1")

        swDim(2) = model.Parameter("height_cubic@Sketch1")

        swDim(0).SetSystemValue3(length, swSetValueInConfiguration_e.swSetValue_InSpecificConfigurations, confName)

        swDim(1).SetSystemValue3(width, swSetValueInConfiguration_e.swSetValue_InSpecificConfigurations, confName)

        swDim(2).SetSystemValue3(height, swSetValueInConfiguration_e.swSetValue_InSpecificConfigurations, confName)

             ......

             component = AssemblyDoc.AddComponent5

                 swApp.ActivateDoc(...)                  ' ***** save and close the part file

                 ModelDoc.Save3                         ' *****(1.sldprt)

                 ModelDoc.CloseDoc

             Return component

          End Function

********************************************************************************

the problem is, everytime i can successfully add dimensions to the first configuration, but when j plus and enters into the next cycle, there will be a problem on this sentence:

        swDim(0).SetSystemValue3

because swDim(0) is null.

Could someone tell me why ModelDoc2 can find length_cubic@extrude in the firstloop while cannot in the second loop?

Any comments will be appreciated.

Regards,

Shane