Hi, maybe convert time to text and compare with nulltextidentifier() or ""

Or validate if the input field was filled then convert to TextToTime()

I guess you could have a local boolean variable just to determine if the user has interact with the widget or not, use OnChange event and assign the local boolean variable to True

I uploaded the oml file for your better idea.

Hope this help.

I think I'll do a workaround:

1) Create a variable to know if the user has to input a Time or not
2) Create a checkbox to give a boolean value to said variable
3) If the checkbox is not selected: I use the input with the default behaviour so that when I don't have nothing selected, or select 12:00 AM, it shows --:-- --.
4) If the checkbox is selected: I use the input but to show 00:00:00 when I select 12:00 AM I change the properties according to this thread: https://www.outsystems.com/forums/discussion/74674/display-000000-as-1200-am-in-input-type-of-time/

I think in this way I can later know if the user introduced a value even if it is 12:00 AM and show the time, OR if the user doesn't put anything I show --:-- -- based on the new variable. 

Hi @Luis Martins ,

Outsystems itself does not make the distinction between empty and 00:00.  But HTML does.  So it is possible to know the difference between them by looking at the elements value.

I have created an OML to show what you could do.

• You can just keep using a variable and input of type time, no need to change anything to that.  
• You need to keep track in your database of whether a value of 00:00 was entered or nothing.  So add extra boolean to your entity named something like "TimeXIsEmpty"  You need this to know what to show wherever you are showing that information, both in that input when later updating, but also in other places where you are just showing that time as an expression
• So, in the Save action of the screen where you have that input, the value of the variable will be 00:00, whether user left it empty, or entered time 00:00
• What you can do in that case, is look at the value property of the input element with a piece of javascript.  That will help you decide the value of the boolean "TimeXIsEmpty" that you store along with the time value in the database
• When coming back to the screen, since Outsystems doesn't know whether it was empty or not, it would show as --:-- in the input
• In the first OnRender after the Fetch (*) , you need to fix this if the TimeXIsEmpty boolean is false : again with a small piece of Javascript, setting the value to 00:00 in that case
• Anywhere else that you are showing this time (like in my demo oml in the list) you can use an if in the expression taking into account that boolean to know if there is a time to be shown or not

Dorine

(*) this is maybe the hardest to get/explain : basically, at the end of the OnAfterFetch, Outsystems is updating the input by giving it a value based on the variable, so if you would put that bit of javascript to fix the non-empty 00:00  in the OnAfterFetch , it would be overwritten by Outsystems after that.