Hi @Yustisiarni G Manao ,

I think you can find this property of an Action and set it to Yes. 

Then it becomes function action, and you can call it from expression.

Note that this is client action then you can use in expression (client).

You can define server action to use it as function as well but just can call in other server action.

Regards,

Khuong

In Reactive web Application, you can use Client Action as a function, though it will limit it to have only one Output parameter. 

You can refer to the following documentation for a better understanding.

https://success.outsystems.com/Documentation/11/Reference/OutSystems_Language/Logic/Implementing_Logic/Logic_Elements/Client_Action

Even in traditional web application, you can set server action as a function, but it should have at least one output parameter.

Hi @Yustisiarni G Manao 

You can create a server action and set its "Function" property to yes. Make sure that this server action has only 1 output parameter. Now this server action you can use it in any expression on the screen

Thanks,

Preetam Vaidya

Hi,

About the topic "can only have one output" don't worry. Create a structure with all the fields that you need to return in your function and define the output variable type as that structure. That way, you will have only one output, but with all the fields that you need to return.

Best regards,

Ricardo Pereira