Disabled/Enable VRRP Script

Someone please help.. needing to make a script to enable/disable my VRRP group (only have one) when an IP address cannot be pinged.

eg: on-down /ip vrrp disable 0
eg: on-up /ip vrrp enable 0

something like that?

Tools - NetWatch
add your Host = IP, on Up = /ip vrrp enable 0, on Down /ip vrrp disable 0

p.s. I think, enable 0 will not work, use enable