This works perfectly on the Mac (press a note and increases it's value in the array), But when running on linux device it is holding on to last note value so increasing the wrong value on 1st press. Seems to happen on value 1. I'm a bit confused.

Do I need to force the process order more or is there a schoolboy error in this small bit of code?

Thanks for any help or pointers!

@donnerbono You need to change the index for [tabwrite]...... and then read the old value and write the new..... so yes.... you must make sure the message passes first to the right inlet of [tabwrite] and then to [tabread].
I will guess that if you close and reopen the patch on the Mac you will have the same error as in Linux..
David.

Thanks so much. One t f f and all is well! Now on to the next problem