AddPropertyDefinition on Thingworx display: Must Specify A Property Name

Hi, i have an issue adding dynamically properties to a remote template create by snippet.

I get an error reporting this:

JavaException: com.thingworx.common.exceptions.InvalidRequestException: Must Specify A Property Name

this is the code:

//template creation

var paramsRemoteThing = {

    name: "MyTemplate",

    description: "This is the description", // STRING

    thingTemplateName: 'RemoteThing',

    tags: 'MyParent:Template'

};

Resources["EntityServices"].CreateThingTemplate(paramsRemoteThing);

//add a remote property

var paramsIns = {

        defaultValue: undefined , // STRING

        description: undefined , // STRING

        readOnly: false,  // BOOLEAN

        type: "STRING",  // BASETYPENAME

        remote: false , // BOOLEAN

        remotePropertyName: "ThisIsMyNamedProperty" , // STRING

        timeout: undefined , // INTEGER

        pushType: "VALUE" , // STRING

        dataChangeThreshold: undefined,  // NUMBER

        logged: false, // BOOLEAN

        name: "variabile" , // STRING

        pushThreshold: undefined , // NUMBER

        dataChangeType: "VALUE" , // STRING

        category: "remote" , // STRING

        persistent: true, // BOOLEAN

        dataShape: undefined // DATASHAPENAME

    };

    // try to add property

    try{

         ThingTemplates[nomeTemplate].AddPropertyDefinition(paramsIns );

    }catch(e){

         logger.error("ERROR adding proeprty:  "+e)

    }

What am i missing ? after creating is necessary to bind remote property?