call Custom javascript method from wwwroot/custompages/clientscript.js to workflow rule

Hi Guys,

Im facing a proble when i call the custom javascript file from the wwwroot/custompages or crm/customdotnet/ in the workflow rule. can you guys help me how can i use the

js function name and calling procedures. im getting the below kind of errors.

File not found: C:\Program Files (x86)\Sage\CRM\CRM2014\CustomDotNet\ClientFuncs.js
An error has occurred in a CRM .net customisation. Please contact your vendor to resolve.