Question - Condition to cast snare

[Crash]

I'm still learning and I have been playing with the different ini files. I have created several different groups to see what I like best. Every group I have started I have a trouble with snare. All the ini I have found set the snare spell (DPS1=Clinging Darkness|50|Once). What ever the Spell is the Once kind of gets me from time to time. I would like to create a cond that checks target is snared or not.
I could be over thinking and You guys might have a better way to make sure Target is snared.

 

[Robban]

DPS1=Clinging Darkness|50|snare

or

DPS1=Clinging Darkness|50|snare
DPSCond1=!${Target.Snared.ID} && ${Target.PctHPS} < 99 && ${Target.PctHPS} > 40 && ${Me.CombatState.Equal[COMBAT]}

maybe

 

[Billy2Shoes]

DPS1=Clinging Darkness|50|Cond1
DPSCond1=!${Target.Snared.ID}

I use something similar to this.