Allow special character :

smart_service/transactions/doctype/procedure/procedure.js

@@ -35,14 +35,14 @@ frappe.ui.form.on('Procedure', {
 
     },
     validate: function (frm) {
-        var regex = /[@#$%^*+\\[\]{}`~:\\|\?]+/;
+        var regex = /[@#$%^*+\\[\]{}`~\\|\?]+/;
         if (frm.doc.procedure_details) {
             for (var i = 0; i < frm.doc.procedure_details.length; i++) {
                 if (regex.test(frm.doc.procedure_details[i].content) === true) {
                     if (frm.doc.procedure_details[i].content_type != "Link") {
                         frm.doc.procedure_details[i].content_type = ''
                         frm.refresh_fields();
-                        frappe.msgprint(__("<b>Content:</b> Only letters, numbers and <b> - ,'<>_()!=/;</b> are allowed."));
+                        frappe.msgprint(__("<b>Content:</b> Only letters, numbers and <b> - ,'<>_()!=/±;</b> are allowed."));
                     }
                 }
             }