Google Sheets Script Parameter for e.g. Button - excel

Question

Is it possible to pass parameters on a signed script?
I have a spreadsheet and made a couple of buttons signing functions to each.
Sample function:
function foo(){
return "bar";
}
Calling this function on a cell
=foo()
returns me bar, signing this function to a button
foo
returns me nothing but of course it works. I mean the script cant return a string to an image (whats actually my button). Anyways...
Sample function with parameter:
function foo(bar){
return bar;
}
calling the script in a cell
=foo('hello world')
returns me hello world as expacted
Signing this to my button
foo('hello world')
causes an error because the button cant find the script. He's searching for a function name foo('hello world') but (...) has non to do with the function.
So how can I pass params when signing script?
At the moment I have 26 functions (all the same, only 1 param changes) to solve this. But with passing a parameter I could do all this with 2 functions instead of 26.

Answer 1

You can't pass parameters when using a custom function via assigning it to a drawable image. It only works when the custom function is called from a cell.
Possible workarounds is to store your parameters on certain sheets and cells then retrieve them via
getRange() and getDisplayedValue().
Other possible workarounds are posted in a Google product help forum which can be found here

Answer 2

I found the best option to create separate helper methods for each individual button, which then pass the correct parameter to the generic method.
In the below example you would bind to the buttons the city specific method, for example for "Helsinki" button "updateAvailabilityInfoHelsinki".
function updateAvailabilityInfoHelsinki() {
updateAvailabilityInfo("Helsinki");
}
function updateAvailabilityInfoPorvoo() {
updateAvailabilityInfo("Porvoo");
}
function updateAvailabilityInfo(citySheet) {
// Do something with citySheet parameter
}