Error in Providing Roles Contorl Name

Hi all,

i created one form which has button … i want to provide Roles Access to Noaccess… So when i give the Control name It shows the following error… The error screen Shot are attached below

check the NeededPermission property for that form control (in that particular form)
For details about that property, msdn.microsoft.com/…/gg879980.aspx