I can't close a CDP, PLEASE HELP

I minted a small amount IUSD and now i want to pay it back and get my collateral back, when I try to do it says i can because “Could not get collateral from wallet” I have the iusd on my nami wallet and more, and plenty of ada on it. please help with this. This a daedalus wallet that imported to Nami for DEFI btw,

please help

Push (robot head) icon
look lower for “Collateral”
add collateral


@none11 Thanks this worked, feel pretty silly, but in my defence, i am new to the Cardano ecosystem