what's the difference between "null", "skip", "clear" expressions ?

[allen_2288]

As a developer, I was developing my connector SDK. I have an question about designing a “update object” action . what's the difference between in "null", "skip", "clear"  expressions ? how can i get when the automatic user use them in the sdk

[marlon-muela]

Hello!
This is Marlon from the Support team!

Here's the definition for the expressions:
https://docs.workato.com/formulas/other-formulas.html#null
https://docs.workato.com/formulas/other-formulas.html#skip
https://docs.workato.com/formulas/other-formulas.html#clear