check Ipsec VPN

Thank you for this great Plugin!

Could somebody help me with the follow problem?
We have some IPsec VPNs, which are down most of the time.
Therefor the “check_fortigate_vpn_IPSEC” returns a Critical Status.
1) Is it possible to define VPN as an exception?
2) Is it possible to change the number of the VPN connections that must be down before that status is critical?
3) Is there a way to monitor only some IPSec VPN Connections?

Thank You