Setting a local certificate for HTTPS

[Keith Clarke]

Hi Folks,
Thanks for the off-list advice concerning my question 'Is this POST and httpHeaders script syntax correct?'

After making some tweaks and adding some transaction logging, via libURLSetLogField, I now know why the server was ignoring me - it can't see my local certificate for SSL communications.

So, how does one go about setting a local certificate in LiveCode for HTTPS connections? The User Guide is rather vague on this.
Best,
Keith..