How to create a variable that can validate phone number formatsDescription<!-- div.margin{ padding: 10px 40px 40px 30px; } table.tocTable{ border: 1px solid; border-color:#E0E0E0; background-color: rgb(245, 245, 245); padding-top: .6em; padding-bottom: .6em; padding-left: .9em; padding-right: .6em; } table.noteTable{ border:1px solid; border-color:#E0E0E0; background-color: rgb(245, 245, 245); width: 100%; border-spacing:2; } table.internaltable { white-space:nowrap; text-align:left; border-width: 1px; border-collapse: collapse; font-size:14px; width: 85%; } table.internaltable th { border-width: 1px; padding: 5px; border-style: solid; border-color: rgb(245, 245, 245); background-color: rgb(245, 245, 245); } table.internaltable td { border-width: 1px; padding: 5px; border-style: solid; border-color: #E0E0E0; color: #000000; } .title { color: #D1232B; font-weight:normal; font-size:28px; } h1{ color: #D1232B; font-weight:normal; font-size:21px; margin-bottom:-5px } h2{ color: #646464; font-weight:bold; font-size:18px; } h3{ color: #000000; font-weight:BOLD; font-size:16px; text-decoration:underline; } h4{ color: #646464; font-weight:BOLD; font-size:15px; text-decoration:; } h5{ color: #000000; font-weight:BOLD; font-size:13px; text-decoration:; } h6{ color: #000000; font-weight:BOLD; font-size:14px; text-decoration:; } ul{ list-style: disc outside none; margin-left: 0; } li { padding-left: 1em; } --> Out-of-the-box there exists a field type "Phone Number (E164)" that can be used to validate phone number formats. This is specific only for normal fields and not for variables as a similar type does not exist for variables. This article details the steps that can be used as a workaround to validate phone number formats for variables. The solution makes use of a Single Line Text variable type and an onChange client script. Release or EnvironmentAll versionsResolutionCreate a variable of Single Line Text type.Create the following onChange client script: Type: onChangeVariable name: the name of the variable to be usedScript: function onChange(control, oldValue, newValue, isLoading) { if (isLoading || newValue == '') { return; } //Type appropriate comment here, and begin script below var pattern = /^[(]?(\d{3})[)]?[-|\s]?(\d{3})[-|\s]?(\d{4})$/; if (!pattern.test(newValue)) { alert('Phone enter a valid phone number'); g_form.setValue('variable_name', ''); }} *Please note that the above regex / pattern is specific for validating 10 integer digits only. You may modify this regex if there's a need for it to validate any other formats.Additional InformationPhone number field type for normal fields