How to add custom URC in the mc60 openCPU code

guys i want to add a custom urc in the code
while (TRUE)
{
Ql_OS_GetMessage(&msg);
switch(msg.message)
{
// Application will receive this message when OpenCPU RIL starts up.
// Then application needs to call Ql_RIL_Initialize to launch the initialization of RIL.
case MSG_ID_RIL_READY:
APP_DEBUG(“<-- RIL is ready → \r\n”);
Ql_RIL_Initialize();
//
// After RIL initialization, developer may call RIL-related APIs in the .h files in the directory of SDK\ril\inc
// RIL-related APIs may simplify programming, and quicken the development.
//
break;

        // Handle URC messages.
        // URC messages include "module init state", "CFUN state", "SIM card state(change)",
        // "GSM network state(change)", "GPRS network state(change)" and other user customized URC.
    case MSG_ID_URC_INDICATION:
        switch (msg.param1)
        {
        case URC_COMING_CALL_IND:
            {
                ST_ComingCall* pComingCall = (ST_ComingCall*)msg.param2;
                APP_DEBUG("<-- Coming call, number:%s, type:%d -->\r\n", pComingCall->phoneNumber, pComingCall->type);

                // Enable module sleep mode
                ret = Ql_SleepEnable();
                APP_DEBUG("\r\n<-- Request sleep mode, ret=%d -->\r\n\r\n", ret);            
                break;
            }
        
        default:
            //APP_DEBUG("<-- Other URC: type=%d\r\n", msg.param1);
            break;
        }
        break;

    default:
        break;
    }        
}

in the above switch case .
i want msg.message to check for gps related urc so how to do it