Decode URL

I am making an API call and in the parameters there needs to be a comma-separated list of the form: id1,id2. So, I set that in the paramaters in the API call in Xano.

The final URL in Xano comes out like this:
https://api.random/v1/records/?Ids=id1,id2

But this returns an error 'id needs to be valid id' from the API provider. I have been going back and forth with the API provider and now I do not know whether this is an issue with them (they cant decode the %2C to a comma) or something else.

So, I would like to know whether, in Xano, I can force the URL to be(since this is the only one that works even when I try in postman): https://api.random/v1/records/?Ids=id1,id2

I saw the URL decoder filter but I did not know where to put it. Putting it under the parameter did not solve the problem.

Do you have any tips?

thanks