how to execute action 1 once only from 5 actions

[Jenny]

Hi, just need some advise on this, i have a script with 5 actions

1. navigation
2. serach code
3. main loop if found then call action update otherwise call action insert.

My question is how do i just execute action 1 once only and let it loop thr from action 2 onward. i have tried this in my action 1

Code:

if Environment ("ActionIteration") = 1 then
  codes for navigation
End if

the problem is Environment ("ActionIteration") always return 1