Yes, this can be done, but how well do you know jQuery/JavaScript? The datepicker is a jQuery UI object. This means jQuery/Javascript date functions work with date objects. JavaScript has a function called setMonth(). You can learn details about the function here: https://www.w3schools.com/jsref/jsref_setmonth.asp To make this work with Formidable, you need to write some custom jQuery. You install the custom jQuery script in the After Fields section of the form's Customize HTML page. What your jQuery needs to do is monitor the dropdown field's onchange event. Every time it changes, you reset the date and that should be it. To reset the date, you tap into the datepicker's API. There's an example here: https://stackoverflow.com/questions/21345194/how-do-i-programmatically-change-the-selected-month-in-jquery-datepicker Toy can learn more about the datepicker setdate function here: https://api.jqueryui.com/datepicker/#method-setDate When all is said and done, you'll probably only have about 8 lines of code to write. Hope this helps.