hello,

i tried to add part into assembly parts and assembled it with it, so , i found how to add part , but, i had same problem when i tried to assembled it.

this is my algorithm :

   swModel.ClearSelection2(True)

        swDocExt = swModel.Extension()

        MateName = "Concentric520" + strCompName

        FirstSelection = "Point1@Origin@" + strCompName & "@" + AssemblyName

        SecondSelection = "Point1@Origin@" + AssemblyName

        boolstat = swDocExt.SelectByID2(FirstSelection, "CONCENTRIC", 0, 0, 0, True, 1, Nothing, swSelectOption_e.swSelectOptionDefault)

        boolstat = swDocExt.SelectByID2(SecondSelection, "CONCENTRIC", 0, 0, 0, True, 1, Nothing, swSelectOption_e.swSelectOptionDefault)

        matefeature = swAssemblyDoc.AddMate3(swMateType_e.swMateCONCENTRIC, swMateAlign_e.swMateAlignALIGNED, False, 0, 0, 0, 0, 0, 0, 0, 0, False, mateError)

        swModel.ClearSelection2(True)

when i run it, it works without error but the part isn't assembled.

i tried to show the mateError  :  MsgBox(mateError) , it gives me : 4 as a result.

Can you help me please, and thanks.