Formula value never print

I'm having following formula, but never print lcHrsMin(it is appear as blank) while preview the report, will

you please advice how to rectify this:-

local numbervar lnHrs:=0;
local numbervar lnMin:=0;
local stringvar lcHrsMin:="";

lnHrs = INT(ABS({RptTable.Hrs_Late}));
lnMin = ROUND((ABS({RptTable.Hrs_Late}) % 1) * 60, 0);
IF lnMin = 60 then
(
lcHrsMin="if mnt is sixty";
 lnMin = 0;
 lnHrs = lnHrs + 1;
);
lcHrsMin="Perform Calc";
lcHrsMin = trim(toText(lnHrs)) + ":" + left(Trim(toText(lnMin)), 2);
IF {RptTable.Hrs_Late}< 0 then
(
lcHrsMin="Performed done";
lcHrsMin = "-" + lcHrsMin;
);

toText(lcHrsMin);