Regarding webdynpro Model Binding with UI elements

Hi,

I am developing WebdynPro(java) application to connect R/3 backend. Im using 2 modules BAPI_MATERIAL_DETAIL and BAPI_MATERIAL_SAVEDATA.i set the context to this.i bind'd these context nodes to Seperate Input Fields...

while running appln the Bapi_material_Detail is running and producing result...but

InputFields for second module is diabled...

what could be The Pblm ? How to solve it ?

Plz Help Me Out...