Oh i havent realized this! I get it now. I thought the {{ }} is vue javascript templating but thats just translated to kirby query and sends back string. I was confused that it uses mustashes like vue and looks like js.
So i can get only saved data (thats fine) as {{ page.anchor }} the problem is i need it on structure field/builder field which i won’t have access too. So out of luck for me. Nevermind.