function patch_form_calculation_CIPF() {
	let form_calculation = document.querySelector('form.fb_form.multistep');
	if (form_calculation === null)
		return;

	/*
	* finds the input:checked in the element .calculate_field
	* and trigger the event 'change' on it
	* - this event 'change' is added by form builder in divi-form-calc-min.js :
	*    $(document).on(
	*      'change',
	*      '.calculate_field input:not([type="hidden"]), .calculate_field select',
	*      function () {
	*        ...
	*      }
	*    );
	*
	*/
	function trigger_change(element) {
		/*
		* jquery version
		*
		let inputs = $(element).find('input:checked');
		inputs.trigger('change');
		*/

		/*
		* js version
		*
		*/
		let inputs = element.querySelectorAll('input:checked');
		// loop through inputs and trigger 'change' event on each
		inputs.forEach(function(input) {
			// Triggering 'change' event
			let change_event = new Event('change', {
				bubbles: true,
				cancelable: true,
			});
			input.dispatchEvent(change_event);
		});
	}


	// create an observer on form to check if child nodes are modified
	const observer_form = new MutationObserver(wait_for_calculation_class);
	observer_form.observe(form_calculation, {
		subtree: true,
		attributes: true,
	});

	// observe mutations to see if they include the addition of class .calculate_field
	// if the class is added, call the function that might trigger the change event on it
	function wait_for_calculation_class(mutationsList) {
		mutationsList.forEach((mutation) => {
			// check if class where added
			if (mutation.type !== 'attributes')
				return;
			if (mutation.attributeName !== 'class')
				return;
			// check if added class is .calculate_field
			let target = mutation.target;
			if (target.classList.contains('calculate_field')) {
				// If the class is added, trigger the 'change' event
				trigger_change(target);
			}
		});
	}
}
patch_form_calculation_CIPF();