How to merge SEOmatic object in Craft 3? I'm using SEOmatic plugin in craft cms 3 and I need to set the seoTitle in my template but can't figure out how to do it...

I know that in Craft 2, it was possible to merge the seomatic variable. I tried something like this :

{% set seomatic = seomatic|merge({
    meta: {
        seoTitle: 'my title'
    }
}) %}


But it doesn't work because the merge filter only works with arrays or "Traversable", and I got object... I'm kind of stuck with this issue.

Has anyone ever managed to make a merge of seoTitle?
Based on the SEOmatic docs, something like this should do the trick nicely:

{% do seomatic.meta.seoTitle("my title") %}