how to use local timer inside function block (not public timer)

i want to make generic function block that i can use it again with other application .So i will use local variable of the function block itself.
like (input-output-in out-temp-stat) but i want to use timer local.
how can i do that



thank you all

1-create a FB
2-from the (IN) FB parmters make a new entry which it's type is (timer)
3-then you can use the same FB as many times as you want
[img][/img]