I have the following patch. It must be able to store the slider values in a text file. Afterwards, I will read these values using the Lua language, with the code also sent below.
However, when I change the slider, no value appears in the terminal that executes the Lua code. I know the Lua code is correct because I can read the file when I send it from another Lua file instead of Pure Data.

Pure Data patch:

Lua code:

@blurryface Have a look at the help file for [textfile].
You need to send the write message into the inlet of [textfile] ..... telling it to write the file.
But first you have to add the data to write..... so...... if you want just one (the last) float written then.....

If you want every float sent into [textfile] then the message will be [add $1( instead of [set $1(
David.