How to make Modify, Repair and Remove page work

Hi experts,

I am new for using NSIS installer. I try to have Modify, Repair and Remove page. and I have different logic in Modify, Repair and Remove,

Can any Experts, show me steps how make this work?

Thanks
Noob

I recall somwhere I saw a complete extention for what you want. I think it is:



Also the link below might be of help



Success, and do not forget "search" is handy...