[HTC Salsa] Calendar (CalDAV) Sync for Android connection string is wrong

I have HTC sense Salsa hardware and I have customise Andriod OS and on it, I have calSync App
that I want to syncronise with my Google Calender through type Caldev

below URL I got from

gives error: Error:CallingMethod:Com.icalparse Calendar Interaction$3.run Errors occurred during caldev connection initialization
I need Correct URL connection string