Height mod wont work

simultaneous

I realise there is a new height mod too but the old one doesnt work either.

Ive been working on it for two hours and im over it. Any help appreciated.

Bananas_45

Have you tried Luumia's Height Slider? https://luumiasims.com/post/174867678324/a-definitive-cas-height-slider-plus-moremore
There is also a recent one by TedW at MTS: http://modthesims.info/showthread.php?p=5469529#post5469529

It would really help if you put the names of the creators so we know whose Mod you are trying to work with.