On Catalog UI Policy - what happen when 'Reverse if false' is true and the action 'Clear the variable name' is false?

[valter479]

On Catalog UI Policy - what happen when 'Reverse if false' is true and the action 'Clear the variable name' is false?

Does that mean if the condition of the UI policy is false then the value of the variable with be clear?

The behavior I am seeing is the value does not get clear.

[Hitoshi Ozawa · Accepted solution]

Checking "Clear the variable value" checkbox is to activate a process to clear field value. When it's unchecked, the process is inactivated.

The checkbox is like adding the following script in "Execute if true" condition.

function onCondition() {
  g_form.clearValue('field1');  // field name to clear
}

Other UI Policy conditions such as "Mandatory", "Visible", "Read only" have opposites but there's no opposite process to "Clear the variable value" because the script would not know what to populate the field with. In other words, "Mandatory", "Visible", "Read only"  are always activated but "Clear the variable value" would only become activated when it is checked. That's probably why "Clear the variable value" is a checkbox like "Activate" checkboxes in other pages.

As such, checking it will activate it and unchecking will inactivate clearing the field. When it is inactivated, nothing will be done whether the condition is satisfied or unsatisfied.

Going back to the original question, if ""Clear the variable value" is unchecked, nothing will happen regardless of whether "Reverse if false" is true or false.

[valter479]

I feel like the 'Reverse if false' it is kind of misleading  because I would expect  the following cases: 

Condition	Reverse If false	Clear the variable value	Result
True	True	True	Value gets clear
True	True	False	Nothing happens
True	False	False	Nothing happens
False	True	True	Nothing happens
False	True	False	Value gets clear
False	False	False	Nothing happens

It is inconvenient that I have to create an opposite UI Policy for each UI Policy with visible actions to clear the value in case user enter value and the the variable gets hidden. It is extremely difficult to keeping track of all this UI Policy in a catalog item with large number of variable that get hidden.

[Mark Roethof]

It is definitely something you have to get used to, though it works very nice.

Don't know what you define as a large number of variables, though if it's like a Catalog Item with 100 variables then you don't have an issue with Reverse if false, then you actually have an issue with the original design of your Catalog Item.

Kind regards,
Mark