Restrict records in reports based on user - Zoho creator

Restrict records in reports based on user - Zoho creator

I have created an application. In general an admin has access to view all the records. I have shared the application in customer portal. Users who access the customer portal should see only the records created by them in report. But admin should all the records created by the portal users. How can I achieve this in zoho creator? Any script needs to be written? I am new to zoho. Please help me.