Anyone setup LastPass as SAML IDP for FortiGate SSL-VPN?

I have tried numerous times to setup LastPass (paid business subscription with SSO) as the SAML IDP for FortiGate SSL-VPN, with no luck... Has anyone done this setup with LastPass as the IDP for a FortiGate before?

I have done SAML setup with AzureAD on FortiGate with no issues, just LastPass seems a bit tricky...

I couldn't seem to find any direct instructions for configuring LastPass as IDP for FortiGate SSL-VPN so if you have access to such instructions please share. Thanks