Is possible remove the button "create" for a specify group and for specify state?

Hi, I tried remove the button "create" for a specify group and for specify state. For all users and for all states I tried with something like this and works: stock.picking.out.tree.changestock.picking.outfalse Is possible do this depending of group and state? After this I tried: stock.picking.out.tree.changestock.picking.outfalse I have two groups: **gestao_ideias.group_gestao_ideias_system_manager** acess_gestao_ideias9,gestao.ideias,model_gestao_ideias,group_gestao_ideias_system_manager,1,1,1,1 **gestao_ideias.group_gestao_ideias_manager** acess_gestao_ideias10,gestao.ideias,model_gestao_ideias,group_gestao_ideias_manager,1,1,1,0 This solution also doesn't work. But if I change field name="groups_id" for this: Works! Why? In this case the user with more permissions don't have a button create but other user have. Thanks.