Another Combobox Property Question

I'm stuck again...

OK I've got the combobox to filter out according to another comboboxs property and it works great....

However when the user goes to edit the feature again I cannot set the value of the operation combobox to the value of a feature property.....

I have this set at the moment Operation: CadPrimary, Property: TenureTypeFilter, I have an editing key of value type featureProperty with a value of "cadPrimary:TENURE_TYPE", which I would have thought upon editing a cadPrimary feature it would set the Operation combobox to the TENURE_TYPE of the feature and therefore set in motion the various criteria I've set for the the LMSID_LINK as it does when placing or after selecting it from the TenureTypeFilter combobox list (I simply want it to happen automatically as the user edits the feature.....)?

 

Cheers

 

Adam J