boot broken

I’ve tried everything to open it, the cable in back seat won’t open the boot, neither will the key, I’ve got a mate to sit on the boot whilst I’ve clicked to key and also tried open it whilst I’ve clicked the key. Not sure what else I can do! The boots full aswell so no access from inside

Hi guys. to be as quick as I can here is my problem that I am hoping someone can help with. My Boot is stuck. Solinoid is fine but connection to latch is broken. Thus won't open. There is an LPG tank in the way so can't crawl in. Boot release cord when used just pulled and nothing happened...