BDM API: how to add a filter with multiple values (OR) to the external API variable

Q&A
1

I have an external API variable in my form which returns the count of an entity created by a particular user with one specific value for a specific attribute (tipo).

…/API/bdm/businessData/com.company.model.Request?q=sumForFindByCreadorAndTipo&p=0&c=10&f=creador={{session.user_id}}&f=tipo=Nuevo%20Carnet

i need this variable to return the count this entity with any of 2 specific values for this attribute (i need to add an OR clause in the URL and dont know how to do it).

…/API/bdm/businessData/com.company.model.Request?q=sumForFindByCreadorAndTipo&p=0&c=10&f=creador={{session.user_id}}&f=tipo=Nuevo%20Carnet OR Remplazo%20de%20Carnet.

thanks in advance,
gabriel