Doubt in Navision ActiveControlOnOpen control?

i created two forms.(list form and card form). In card form i used 4 tabs.
when i go to the card form from list form it automatically goes to 3rd tab not 1st tab. i set ActiveControlOnOpen control in form properties i used f1st tab 1st field ID. but some records it goes to 1st tab and some recors it goes to 3rd tab.

how can i solve this problem?



Thanks & Regards,
kishore.