How to use fetched value in

i have this code to fetch full name user value{
method: “frappe.client.get_value”,
args: {
“doctype”: “User”,
“filters”: {“name”: frappe.session.user},
“fieldname”: “full_name”
but i need to set full_name value in current new form
how i can use fetched value ?

You can refer to our documentation and use callbacks (Frappe Ajax Call) and the set_value method (Not Found)