Constraint { 
{ Name Efield; 
    Case { 
       { Region Face_7; Type Assign;  Value 0.000000e+00; } 
       { Region Face_9; Type Assign;  Value 0.000000e+00; } 
    } 
 } 
{ Name Efield_zero; 
    Case { 
    } 
 } 
}