Thread: Problem with macros..

I have following code
Using microcontrollers

Code:

#define MALLOC(size)                  pvBosMemAlloc( size )
#define FREE ( a )                        bBosMemFree ( a )

typedef struct {
                          uint8 i;
                          char ch[6];
}mine;

uint8 zcl_SendCommand(mine *pMsg)
{
   mine *rcv;
   rcv = MALLOC(sizeof(mine));

   //Some code
 
  FREE (rcv);

}

I get following errors:

Source\zcl.c:267: error: 'a' undeclared (first use in this function)
Source\zcl.c:267: error: (Each undeclared identifier is reported only once
Source\zcl.c:267: error: for each function it appears in.)
Source\zcl.c:267: error: expected ';' before 'bBosMemFree'

What may be wrong with the code.....

Thanks