{Dynamics 365 Web API} Setting Multiselect optionset values

Multiselect optionset field is a great feature introduced by microsoft. With the Web API, you set the values by passing a string containing comma separated number values as shown in the following example: POST [organization uri]/api/data/v9.0/contacts HTTP/1.1 Accept: application/json Content-Type: application/json; charset=utf-8 OData-MaxVersion: 4.0 OData-Version: 4.0 { "@odata.type": "Microsoft.Dynamics.CRM.contact", "firstname": "Wayne", "lastname": "Yarborough", "new_testmultiselect": "1,… Continue reading {Dynamics 365 Web API} Setting Multiselect optionset values