Xrm Service Tool Kit

Hello all Crm firends,

I just try to custom crm 2015 and use Xrm Service Tool kit version 2.2.1

I try SOAP, REST on the subgrid but always I have warning that "Xrm Service Tool Kit is undefined"

When i try same code on CrmRest Builder always i get result but on the Crm always Xrm Service Toolkit is undefined.

Do you have any idea or solution for my problem. What i am doing wrong?

Thanks