# \[APP\]\[Pro\] Better Logic Library - For Users **URL:** \ **Category:** Apps\ **Tags:** app, tools, homey-pro, logic, bll\ **Created:** [November 7, 2022, 10:13pm UTC](https://community.homey.app/t/app-pro-better-logic-library-for-users/71876 "2022-11-07T22:13:40Z")\ **Posts on this page:** 1\ **Showing post:** 220
**Author:** ![Rrrr](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rrrr/32/629_2.png) [@Rrrr](https://community.homey.app/u/Rrrr)\ **Post date:** [December 17, 2024, 2:35pm UTC](https://community.homey.app/t/app-pro-better-logic-library-for-users/71876/220 "2024-12-17T14:35:20Z")
@Arie_J_Godschalk Here’s a challenge. I am trying to list the status of 10 timers (running or not running) in a log without using a variable and a minimum of cards. I am hoping you have a creative solution with BLL. I am looking for this: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/0/d/0d6788355e8bc5116b28f2544ce1b1ecdae3e78d.png) The issue is that for each timer combination that is running/not running I need to create another log card. So I thought of using your other app Advanced Triggers. Like this: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/7/b/7b595d12afd8ceb7ab84eb83edf14804ed77a58e.png) The issue here is similar: I do not want to create many Return cards. I also tried with BLL: It is ultimately the same issue. ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/f/6fc7c0f0e66d9fc54af6fd0d94f8861959f52d21.png) I wish the Return card fields could contain BLL expressions, but even then I would not know how to calculate the answer for each Yes/No variable. My problem is that I do not know how to calculate with an empty value (the missing link in the flow). Any more magnificent ideas? --- _[View the full topic](https://community.homey.app/t/app-pro-better-logic-library-for-users/71876)._