How can I filter search kommo leads by custom field values?

So I need to search for leads that have a specific value for a specific custom field. I’ve tried everything but I always get an error 400 (bad request) from the kommo api. I’ve looked it up on the documentation but wasn’t able to find how to do this. I’m using the Search Kommo Leads module:

I’d like to look for leads with this custom field and this value:

{“field_id”:1516123,“field_name”:“CRIADO PELO LEADSTER”,“field_code”:null,“field_type”:“textarea”,“values”:[{“value”:“sim”}],“is_computed”:false}

{“field_id”:1516123,“field_name”:“CRIADO PELO LEADSTER”,“field_code”:null,“field_type”:“textarea”,“values”:[{“value”:“sim”}],“is_computed”:false}

Thank you in advance!