CCS/MSP430FR2633: #20 identifier "pButtonGroup" is undefined

Tool/software: Code Composer Studio

Hi all,

I am  using MSP430FR2633 for buttons group.need get dominantbutton ID,so i found " extern uint8_t CAPT_getDominantButton(tSensor *pButtonGroup);" in CAP_Buttons.h.

following is part of my code :

lastDominantbutton=CAPT_getDominantButton(tSensor*pButtonGroup);

the problem

Description    Resource    Path    Location    Type
#20 identifier "pButtonGroup" is undefined  
Description    Resource    Path    Location    Type
#256 type name is not allowed  

since review captivete thechnology guide ,but not found the answer yet.

any suggestions would be appreciated.

thinks