Https and SSl issue in Titanium appcelerator iOS mobile Application

Question

I have preare a API call using HTTPClient (titanium ios mobile application).

It is a Login page so I have use https protocal, (https"//example.com)

but it returns a following error message,

"A connection failiure Occured. SSL problem(Possible causes: SSL may include a bad/expired/self-signed certificate,clock set to wrong date".

But the same https url has work fine in Rest Client(Google App), so from web site has SSL authority.

How can I solve this issue?

Note: if I used validatesSecureCertificate : false its works. but I want a secure connection, so I want to work even I set this as validatesSecureCertificate : true.