As title
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The value a field shows is stored in a local variable or rule input. To blank the field you need to modify the underlying value using a saveInto.
i didn't fully understand
Kind of. This is absolute Appian basics and there is plenty of documentation and tutorials. Go there first! The community is for more specific questions once you understand the basics.
I did with saveInto:{ri!input,a!save(),a!save()}, but still not work. By the way, thank you so much for your help, i already finish with that 80 hours tutorial. I see your interface template is really useful, do you have some process model template i can study with? I will be the person in charge of appian in my place at future but none of my team member ever touched appian before.
saveInto:{ri!input,a!save(),a!save()},
This is just plain wrong! a!save() has parameters. What do you expect to happen without passing any values?
Why do you not just lookup the documentation? There are examples!
docs.appian.com/.../fnc_evaluation_save.html
I mean i definitely did with a!save(target:ri!input, value:save!value), but still can't refresh to blank after click buttons, sorry for bother
Sure. save!value is the value coming from the text field. This is stated very clearly in the documentation. To store null to a variable, you need to use "null" instead of "save!value".