To Convert Container value to String format in axapta you can use con2Str method. Below is the sample of code to tryout in your job to check the string value.
container TestCont;
TestCont+= "He is not a permanent ";
info(con2Str(abc));
TestCont+= "Employee and belongs to Sales Department";
info(con2Str(TestCont));
container TestCont;
TestCont+= "He is not a permanent ";
info(con2Str(abc));
TestCont+= "Employee and belongs to Sales Department";
info(con2Str(TestCont));