completed objective stops game

when i complete the single mission objective the game stops and it's telling me i completed the mission objectives.

but i don't want to stop, i'm in the middle of a battle and i still have fuel and torps with no damage at all.

in sh3 i liked being able to decide when to leave the action so if i completed my objective i could decide if i was able to continue the battle.

is there a way to get the missions to not end as soon as the objective has been achived?

i tried by deleted the mission events and nothing changed, then i deleted triggers and again nothing changed, and then i deleted the objectives but then mission would not run.

and yes i know this is wrong forum but nobody visits sh4 mission builders anymore, 1 post a day is all it gets if your lucky.