How to pass reference to container array to frontend callback from c#

[tsnewbie999]

Snippet

In the following code segment, i am trying to send a frontendcallback an array of struct items. in the callback i added a msgbox to show what is in the stuct at the sequence. when i call this frontend callback in a sequence and pass the array of objects from teststand, i see the msgbox show up for each item in the array with its current values. when i call this from my user interface, the msgbox shows up once and all variables are black.

why is teststand not able to unpack my container? i sent the same container from teststand to the user interface and it unpacked the same way im packing it, below.
so what am i missing? 


PropertyObject ArgContainer = Eng.NewPropertyObject(PropertyValueTypes.PropValType_Container, true, "MYARRAYITEMS", 0);
PropertyObject[] ArgListArray = new PropertyObject[MAYARRAY.Count];
ArgContainer.SetNumElements(MYARRAY.Count, 0);
 
// loop here for each MYARRAY Item found in list.
for (int index = 0; index < MYARRAY.Count; index++)
{
    ArgListArray[index] = Eng.NewPropertyObject(PropertyValueTypes.PropValType_Container, false, "", 0);
    ArgListArray[index].Name = "";
    ArgListArray[index].NewSubProperty("ITEMA", PropertyValueTypes.PropValType_Number, false, "", 0);
    ArgListArray[index].SetValNumber("ITEMA", 0, index);     ArgListArray[index].NewSubProperty("ITEMB", PropertyValueTypes.PropValType_Boolean, false, "", 0);     ArgListArray[index].SetValBoolean("ITEMB", 0, Eil[index].Enabled);     ArgContainer.SetPropertyObjectByOffset(index, 0x1, ArgListArray[index]); 
} 
Eng.CallFrontEndCallbackEx("MYFRONTENDCALLBACKID", ArgContainer);

all my callbacks which have a single item, not in an array are received correctly and work. but when i use the second container everything is misinterpretended on the sequence end.

thanks in advance.