# Compare 2 boolean variables **URL:** \ **Category:** Flows\ **Created:** [September 11, 2024, 1:43pm UTC](https://community.homey.app/t/compare-2-boolean-variables/115858 "2024-09-11T13:43:39Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![aste](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/aste/32/9729_2.png) [@aste](https://community.homey.app/u/aste)\ **Post date:** [September 11, 2024, 1:43pm UTC](https://community.homey.app/t/compare-2-boolean-variables/115858/1 "2024-09-11T13:43:39Z")
EDIT SOLVED: See bottom of post. I’m trying to compare 2 boolean variables. IF A or B is changed AND A=B THEN do something ELSE do something else If I use the logic AND card “var A operator equals var B is true” I get an error “Left-side Is Non Numeric”. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/2/92eb2619f3ad5586367380cee0e323391447b67f.png) If I use the same logic AND card but calculates {{A+B}} equals 0. It works. But I need both 0 and 2 to return true. So I tried to different variants of using OR to the right. 0 OR 2 {{0}} OR {{2}} {{0 OR 2}} They all fail. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/d/5/d50fd488b4fb09c8702d367301a65cd7de3afd98.png) Is it possible to compare 2 boolean variables using the built in logic in one card? For context, I’m coming from Better Logic and want to move to a more visual solution that is easier to expand when more family members needs to be included in all the logics 😉 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/5/1/5161e6b85af7d22806d5365ea1ab347224e117ee.png) EDIT: Just solved it. In this case , second option works with reverse logic. IF A OR B is changed AND {{A+B}} equals 1 THEN something else ELSE something. I’ll leave the post here as I didn’t find any topic like this when searching the community. ---
**Author:** ![Rmb](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rmb/32/79135_2.png) [@Rmb](https://community.homey.app/u/Rmb)\ **Post date:** [September 11, 2024, 3:31pm UTC](https://community.homey.app/t/compare-2-boolean-variables/115858/2 "2024-09-11T15:31:14Z")
You find a nice workaround, and “invented” [the XOR function] 😁 ([XOR gate - Wikipedia](https://en.m.wikipedia.org/wiki/XOR_gate)).