How to use MODIFIED HEADER in Soap Request

I have to make soap request to TimeTec Api.
1- First login works using Soap Request Activity. I receive a Security-Token

2- In following Soap Requests i HAVE to use this Security-Token in Soap request Header. How do i do that?

For PHP there is example available from TimeTec…if this can be of any help to understand the problem.

SecurityToken Used for authentication for subsequent function.
Need to put in SoapHeader when call subsequent function from web service.

Eg (PHP).

$auth = array( ‘SecurityToken’=>$this->getSecurityToken());
$header = new SoapHeader($this->namespace,‘WebServiceSoapHeader’,$auth,false);

Thank you in advance !