How to see structure elements while editing

Hi,

I know that µVision support that a user can see the attributes from any userdefined structure in da dropdown-menu. For example:

typedef struct counter
{
  INT32U MAXALLOWEDVALUE;
  INT32U CURRENTVALUE;

}COUNTER;

COUNTER C1;

When i'm editing and use

int main(void)
{
  C1.
}

i want to see on the right side the attributes in a dropdown-menu. Which option i have to activate?