Access Top Parent Form in IEE Client

Instead of :i_hWndParent use :i_HwandTopFrame. It will get the topmost form handle.

:i_hWndParent: Immediate Parent Form

:i_HwandTopFrame: Topmost Parent Form

Example:

CONTRACT_ID = :i_hWndTopFrame.frmServiceContractTab.ecmbContractId

Related Links:

How to get the child form in a Master Detail Form Pic Tab in IFS10

How to get Parent Form in Master Detail Form in IFS10