hide multirest number locally

[mussjaweilfinale]

hey community

i have a bar like attached where the number 1 is displayed according to my settings for multirests. in general the settings should be followed but in this specific case where the second instrument is playing something bot not the first there i want to hide the number but not the rest itself.
can someone help me to do so?

merci beaucoup
jo

ps: i could cover the number with a white shape but thats not an option for me because of format and the further handling of the file