public ActionStringAdd()
{
_StackOps = new StackChange[ 3 ];
_StackOps[ 0 ] = new StackPop( AVM1DataTypes.AVM_String );
_StackOps[ 1 ] = new StackPop( AVM1DataTypes.AVM_String );
_StackOps[ 2 ] = new StackPush( AVM1DataTypes.AVM_String );
}