After update to 4.1, Tab.attachForm is not a function

Hello,
I have a problem with Tabbar after update from 4.0.3 to 4.1 standard
My code:
myTab.tabs(“Tab1”).attachForm(myFormStructure);

I got error:
myTab.tabs(“Tab1”).attachForm is not a function

Thanks

I’m sorry…
After clear browser cache problem solved