Name Potentials based on two custom fields

Name Potentials based on two custom fields

Hi, 

I would like to know if I can name Potentials (renamed Intérêts for my case)  based on two custom fields. 

This is my code so far, and I just don't know what else I can do.  

potentialIdStr = input.potentialId.toString();
potentialname = input.diffshortname + "-" + input.artiste;
mp = Map();
mp.put("Intérêt Name",potentialname);
updateResp = zoho.crm.updateRecord("Intérêt",potentialIdStr,mp);

Arguments are: 

potentialId = Intérêts - Intérêt Id
artiste = Lookup:Nom de l'artiste - Last Name (this is a field based on a dropdown in Leads) 
diffshortname= Diffuseurs - Accronyme membre (this is a field based on textfield in Contacts)

Thank you so much for any help.