Need sample for Embedded update connection string

Hi, 

I have created pbix file using desktop application and Imported successfully.

Now i want to change the connection string, I tired using option 7 like this.

I am getting the below error message

The Connection syntax i am using: data source=MyServer;initial catalog=MyDB;persist security info=True;encrypt=True;trustservercertificate=False

Could somone provide sample connection string if this is wrong. (for Dirert & Import)

Thanks in advance