Input as delays for temporal logic (Stateflow)

Hello,

I have a Stateflow chart with many temporal logic transitions. It uses fixed step solver with 0.2 step size. I use integer numbers 1, 2 to represent delays

after(1, sec)

When I use only integer numbers as delays, everything works fine. But after I decided to apply delay as an integer input of a chart

after(delay1, sec)

(Delay1 is integer input of chart) I receive the message:

The following expression contains non-integer code. The option 'Support
floating-point numbers' has not been set in Code Generation configuration
options. Hence, only integer code/data is allowed.

Transition #1 in Chart 'Logic' (#2): after(delay1, sec)[..]

So, if I check an option 'Support floating-point numbers' the compiled code size bloats because of floating point math. How could I set delays as int inputs and get rid from floating point math? Thank you.