# Java concurrent queue for tag change scripts **URL:** \ **Category:** Ignition\ **Created:** [November 17, 2023, 1:53pm UTC](https://forum.inductiveautomation.com/t/java-concurrent-queue-for-tag-change-scripts/82044 "2023-11-17T13:53:19Z")\ **Posts on this page:** 1\ **Showing post:** 59
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [April 12, 2024, 5:34pm UTC](https://forum.inductiveautomation.com/t/java-concurrent-queue-for-tag-change-scripts/82044/59 "2024-04-12T17:34:24Z")
There is now a half-example (not using the drain decorator) over here: > [@Modbus Slave/Server to Generate Read Only Tags](https://forum.inductiveautomation.com/t/modbus-slave-server-to-generate-read-only-tags/87583/21): > > I've create a generic "Modbus Publish" script that eliminates the need for a second set of tags. I've publicly posted it here: [https://www.automation-pros.com/ignition/modbusPublish.py](https://www.automation-pros.com/ignition/modbusPublish.py) It requires the "Queue Utility" script posted here: [https://www.automation-pros.com/ignition/queueUtil.py](https://www.automation-pros.com/ignition/queueUtil.py) and described over here: Both scripts rely on my Integration Toolkit's globalVarMap() script function, but you can rework that (not quite 1:1) to use system.util.getGlobals() if you must. (Not recomme… Edit: The work-around for a long-standing script library "auto-import" bug is being added to my example scripts. Consider including it in yours: > [@Project Library Script Initialization Races](https://forum.inductiveautomation.com/t/project-library-script-initialization-races/98636): > > Are you annoyed by pseudo-random breakage in Ignition project library scripting? Odd top-level constants being garbled, or operations in the top level that have side effects running twice? Or more? Not happening much, but always around project edits, and sometimes even on gateway restart? Yeah, me too. frowning_face Poking around under the hood back in the spring, for a module development task, I ran across some problematic IA bytecode and pinged some people. But it went nowhere, as I co… --- _[View the full topic](https://forum.inductiveautomation.com/t/java-concurrent-queue-for-tag-change-scripts/82044)._