Open fixed asset master data on choose from list new button click in SAP B1 SDK

Hi all,

I want to open fixed asset master data when i click on choose from list NEW button. I have applied choose from list by setting condition that itemtype = 'F'. This opens fixed asset master data when i click on choose from list. But when i click on new button in choose form list, it opens item master data screen. I want fix asset master data screen to open up. Please help??