The function returns void, so you wouldn’t see anything…
Which I think is what the admin interface is doing as well, there’s no OK/Success flag so you don’t get a confirmation it worked… I’d like to think it throws an exception if it didn’t work.
I’ve just run this on trycfm and it appeared to work…
<cfscript>
dump(SSLCertificateInstall("ee.iva-api.com"));
</cfscript>
<cfhttp url="https://ee.iva-api.com/Videos/GetVideo/">
<cfdump var="#cfhttp#">