See here bottom of page:
http://alivemod.com/wiki/index.php/Script_Snippets

Military Logistics and the Player Resupply module both work from the Global Force Pool to establish the allowed reinforcement levels for a faction. You can adjust this value on the fly in your own missions to add or remove from the global force pool. If running on a dedicated server, this must be performed on the server side only.

if(isServer) then {
 
	// example: get the global force pool count for the BLU_F faction
        _currentBLUFORForcepool = [ALIVE_globalForcePool,"BLU_F"] call ALIVE_fnc_hashGet;
 
        // example: alter the current BLU_F force pool
        [ALIVE_globalForcePool,"BLU_F",20] call ALIVE_fnc_hashSet;
 
};