How to set a value?

RE: How to set a value?

kevinr0001 — Mon, 15 Jun 2020 17:46:35 GMT

thank you so much Peter! 😁😂😘😁

works perfectly

RE: How to set a value?

Peter Lewis — Mon, 15 Jun 2020 17:29:09 GMT

What Danny described above is how you initialize a variable. However, in the use case you described, it looks like you want to save a value into a variable. The easiest way to do this is to use the a!save() function to define a target variable and the value you would like to save to the variable. I'd suggest trying something like this:

saveInto: {
  ri!var1,
  /* I'm assuming you always want to save the value of the first variable */
  /* or else your dropdown wouldn't remember the value chosen by the user :) */
  
  a!save(
    target: ri!var2,
    value: null
  )
  /* You shouldn't need any logic like an if() or isnull() here because you */
  /* would always want to save a null value for var2 when you update var1 */
}

If this still doesn't work, I'd also recommend looking at the recipe for a cascading dropdown since that seems pretty similar to what you are trying to do!

RE: How to set a value?

kevinr0001 — Mon, 15 Jun 2020 17:18:12 GMT

thanks for the reply,

I am trying to link two dropdown fields so that when I change one the other resets

what I have currently is:

saveInto: {
if(isNull(ri!var2),
ri!var1
ri!var2:null

}

my logic if var2 is empty

save var 1

if not

clear var 2

figuring the user could just redo the value they put in and It would not crash like it currently does

RE: How to set a value?

Danny Verb — Mon, 15 Jun 2020 14:55:48 GMT

In Appian, local variables are set using colons, : . You can update the values using a!save() in certain components https://docs.appian.com/suite/help/20.1/enabling_user_interaction.html

For example

a!localVariables(
local!message: "Hello World",
{
    a!textField(
        label: "Message",
        value: local!message,
        saveInto: local!message
    )
}
)