Deployable Ladder (SORT OF WORKS)

This mod is a block that when powered with redstone it will spawn ladders below, then when unpowered it will remove the ladders, hence why its called deployable ladders. 

I made this mod for a very specific reason but this can be used for mutiple things:

Need to have a way to get up somewhere quickly but dont want the thing behind you coming up as well? This has you covered. 

Need to get up a small ledge often but you don't want a regular ladder to stick out like a sore thumb every day? This has you covered again.