Steps to reproduce the behavior:

• Go to Priorities
• Click on Profile
• Scroll down to # Incoming damage requirement is 25% of max health solo, 50% of max health in a group.
• See below for the entry

Incoming damage requirement is 25% of max health solo, 50% of max health in a group.

actions.mitigation+=/death_strike,if=incoming_damage_5s>=0.5health.max|(!group&incoming_damage_5s>=0.25health.max)

Looking at this, shouldn't it be;
actions.mitigation+=/death_strike,if=incoming_damage_5s>=0.25health.max|(!group&incoming_damage_5s>=0.5health.max)

since !group is when you are in a group. Or am i reading this wrong and !group means you're not in a group?

! means not. So yeah, the existing logic is "any time damage in past 5 seconds is > 50% or if you're solo and damage is > 25%".

! means not. So yeah, the existing logic is "any time damage in past 5 seconds is > 50% or if you're solo and damage is > 25%".

Thank you very much. I am still learning lua, so much appreciated :)

In that case, be careful. ! is used as "not" in SimC's syntax, which the addon invisibly translates to Lua.

Okay thank you so much!