Filter Hugo Pagination by Custom Param

UPDATE

refering to Oleg Butuzov answer i can solve my first problem with :

{{ $paginator := .Paginate (where .Site.RegularPages ".Params.yt" ">" "") 1 }}

but i have new problem that its listing all post on content folder Hugo that contain param "yt", and then i solve my problem from Official Hugo Discusion here https://discourse.gohugo.io/t/complex-where-filter-using-and-or-not/5758/3 from @bep reply.

and here.. how to filtering where HUGO with two condition :

{{ $paginator := .Paginate (where (where .Site.RegularPages ".Params.yt" ">" "") ".Params.type" "post") 1 }}

i update and clearing this Question because its realy hard to find about this Hugo Question and i hope its can solve your problem too.. thx

======= ORIGINAL QUESTION ======

how to filter "where" for Variable $Paginator to only listing post that contain Custom param "yt"?

{{ $paginator := .Paginate (where .Site.RegularPages "Type" "post") 2 }}
{{ range $paginator.Pages }}
   {{ .Params.yt }}
{{ end }}

{{ template "_internal/pagination.html" . }} 

my Hugo Template structure :

conten/Post/
---- post1.md
---- post2.md

theme/layout/post/gameplay.html

then

post1.md

---
Title: Title 1
type: post
yt: ytchannelid
---

post2.md

---
Title: Tile 2
type: post
---

thanks before :)

You can use combination of .Params and comparison operators.

So, for example, I want to show the only projects with forks on the project page.

{{ define "content" }}
  {{ range first 6 (where .Paginator.Pages ".Params.Forks" ">" "") }}
    <div class="inner">
    <pre>[{{.Params.Forks}}]</pre>
    <hr>
    </div>
  {{ end }}
{{ end }}

• see more at where manual page.