How to you add back to a units Init box following respawn of that unit

[avibird 1 96]

I am having a little issues with this. I am using a medic support script that needs to be place in the squad leaders INIT box for the script to work however after the SL gets killed I can't get the script to run again. this is the code that goes in the init box _null = [this,"closeMedic"] execVM "medicAuto.sqf";