Usage of asiSelectInst()

Hello dear friends of fancy SKILL programming,

 i tried the whole afternoon to get the asiSelectInst() function to do what it should, but...

*Error* No method supplied for generic function asiGetSimName

 I traced  asiGetSimName(), and usually the forms (e.g. "Analysis -> Choose...") call it succesfully with a simulation object, returning the simulator name (spectre in my case). I also saw Andrew's hint from 2004 to try something like  MYform->asiSession=asiGetCurrentSession(), but no luck :-(

 Here are some snippets from my code:

 ...

  instanceName=hiCreateStringField(
        ?name 'instanceName
        ?prompt "Instance"
        ?editable 'nil
        ?value "*** empty ***"
       )
        selectButton=hiCreateButton(
                ?name 'selectButton
                ?buttonText "Select Instance..."
                ?callback "asiSelectInst('instanceName ?prompt \"Select instance...\" ?form 'iastoolsAOForm)"
        )

...

    unless(boundp('iastoolsAOForm)
        iastoolsAOCreateForm(myADESession)
        )
    hiDisplayForm(iastoolsAOForm)
    iastoolsAOForm->asiSession = myADESession

...

 This code calls asiGetSimName() if I press my select button - but without argument, thus leading to the error message from above. So, how exactly do I bind my session to my form? Or how should I call my form to avoid this issue? I also tried to set astiSession as done e.g. for the direct plot field.

 Any help appreciated :-)

 thanks,

Martin