You should also take care to set the exit code properly from the script, so that the shell script which collects these can examine it.

I guess something like if OUT_STATUS is "Success" exit 0, otherwise some higher number (0 means success).

You are in control of the first shell script (and if not, create a wrapper script which you are in control of), so simply make it return success (zero) under the conditions when the second and third scripts can be run, and non-zero if not.