Problem with joinableNet Function in Assura

Hello everybody,

I am currently writing my diploma thesis and have this problem i
couldn't solve.
I use the ASSURA version 3.16 with an AMS HIT-KIT 3.70.

If I check the Top-layout I get errors like "hot nwell",
"BAD_NDIFF_MULTICON_ERC"
but checking the sub hierarchy there are no errors.
I have enabled the joinPins Function (all Levels) and the joinableNets
Function
( joinableNet("VDDA" "vdda" "vdd") ).

If the layout is checked by DIVA "with join nets with same name" I
get
no errors.

In the discussion in comp.cad.cadence " assura join net syntax problem
" a
function joinNets (not joinableNet) was mentioned. Where can I find
this function?

Does anybody know how to fix the error?

Thanks for your help

Best Regards
Florian