Hello @Malvika 

You have to first take dependency from OutsystemsUI and there is a Client action DatePickerClear

• Then you need add a local variable of text type that will hold the value of the input widget that you will get on OnSelect event handler.
• After getting the value Assign the WidgetId of your input date to the local variable that you have created.
• Then On a button call a client action and on the action flow drag and drop DatePikerClear Client action
• Here you need to assign the Id of your widget that you have stored in your Local variable.
• And its done.

I am attaching Oml file that can also help you

Sample

I hope this will help.

Best Regards,

Tousif Khan