checkbox disable in table view

Hi,

I have tried to set the checkbox with Get_P value of a field with boolean type. the table view is bound with a Z genil model.

I have changed Get_P_xxx

I have change the in genil to make the get_attriubtes method to 'Changeable ' ?

but that field is still disable.

Are we missing something here?

Could anyone give a flow or steps to archive this ?

thanks

Benjamin