RETURN c_znak+c_hours+":"+c_min+":"+nSecs &&operator/operand type mismatch

>*** Method name TimeAdd
>
>   LPARAMETERS nSecs, nSec2
>   LOCAL c_hours, c_min, c_znak, nLocSec
>   IF TYPE("nSecs") # "C" .OR.;
>      TYPE("nSec2") # "C" .OR.;
>      TYPE("nSecs") # TYPE("nSec2")
>      RETURN ""
>   ENDIF
>
>   nLocSecs = VAL(LEFT(nSec2,2))*3600
>   nLocSecs = nLocSecs + VAL(SUBSTR(nSec2,4,2))*60+ VAL(SUBSTR(nSec2,7,2))
>   nLocSecs = nLocSecs + (VAL(LEFT(nSecs,2))*3600 + VAL(SUBSTR(nSecs,4,2))*60+ VAL(SUBSTR(nSecs,7,2)))
>
>   nSecs   = ABS(nLocSecs)
>   c_hours = INT(nSecs/3600)
>   IF c_hours > 24
>      RETURN ""
>   ENDIF
>   nSecs   = nSecs - (c_hours*3600)
>   c_hours = IIF(c_hours<10,"0","")+ALLTRIM(STR(c_hours,15))
>   c_min   = INT(nSecs/60)
>   nSecs   = nSecs - (c_min*60)
>   c_min   = IIF(c_min<10,"0","") + ALLTRIM(STR(c_min,15))
>   nSecs   = IIF(nSecs<10,"0","") + ALLTRIM(STR(nSecs,10))
>
>RETURN c_znak+c_hours+":"+c_min+":"+nSecs
>