Working on a form to retrieve the multiple values from the checkbox to a single field.

Here is the code i am using. but not able to get the values from the checkbox

var selectedSpecialties = GetFieldValue("SpecialtyField");
console.log('Selected Specialties:', selectedSpecialties);

// Ensure that selectedSpecialties is an array
if (!Array.isArray(selectedSpecialties)) {
    selectedSpecialties = [selectedSpecialties];
}

// Convert the array to a comma-separated string
var combinedSpecialties = selectedSpecialties.join(", ");
console.log('Combined Specialties:', combinedSpecialties);

// Set the value of CombinedSpecialtiesField
SetFieldValue("CombinedSpecialtiesField", combinedSpecialties);