iLogic, Assemblies and part parameter values

[NachoShaw]

Hey

i do try to avoid iLogic where possible but sometimes there is a need. In my case, model states and the relationship between assembly values & part values. To be honest, Model states shouldnt really come into this but im using them so will reference them.

In my assembly, i have a custom iProperty field called "P_Qty"

in my part, i have a Parameter called "Qty"

i want to change the parameter in the part when the iProperty is changed in the assembly.

iLogic

Parameter.Value("GL:1", "QTY") = iProperties.Value("Custom", "P_Qty")

ive also tried

Parameter("GL:1", "QTY") = iProperties.Value("Custom", "P_Qty")

which is basically saying or at least it should be-

Change the value of the parameter named "QTY" in occurrence "GL:1" to the value of the custom iProperty "P_Qty" in the assembly

when i run this, i get an error

System.Runtime.InteropServices.COMException (0x80004005): Unspecified error (Exception from HRESULT: 0x80004005 (E_FAIL))
   at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData)
   at Inventor.Parameter.set_Expression(String )
   at iLogic.ParamDynamicFinder.SetParamValue(Parameter param, Object value, Boolean doUpdate)
   at ThisRule.Main()
   at Autodesk.iLogic.Exec.AppDomExec.ExecRuleInAssembly(Assembly assem)
   at iLogic.RuleEvalContainer.ExecRuleEval(String execRule)

Even if i change to a static number, it doesnt work..

Parameter.Value("GL:1", "QTY") = 1

what am i missing? The part is in the assembly and im trying to run this from the assembly iLogic

thanks

[NachoShaw]

UPDATE

If i dont have any Model States in the part, i can update the parameter. If this is the case, how do you control parts with different model states in an assembly? i thought the idea was so we could create an assembly and have different versions based on Model states? Ive been working with Model States for about 2 weeks now and there appears to be a blockade on everything ive tried to do... Its like American Ninja is the Model State function and i am the 1 legged contestant trying to get across the line...

[NachoShaw]

Dont worry, i have gone a different route now and skipped away from Model States...

Thanks 🙂