Sharepoint Internet site with NLB via TMG

I have configured two wfes in NLB, the nlb name is say 'spwebnlb'

Using this name as 'hostheader' I have created a webapplication, so that I can accesshttp://spwebnlb , I am able to achieve this.

Now the issue is I want this site to be accessed with url https://www.companyname.com

First thing I added this url in AAM of central admin

I have published the site using TMG

In IIS i have added binding for SSL (in iis host name is spwebnlb)

Now I am not able to access the site it give me error as, it is actulally taking me to /pages/variationroot.aspx

The Web application at https://www.companyname.com could not be found. Verify that you have typed the URL correctly. If the URL should be serving existing content, the system administrator may need to add a new request URL mapping to the intended application.