<SilentPost>

After a form submits successfully, sends an HTTP POST request to the specified Url behind the scenes — the user is not redirected and never sees the response. Useful for notifying a webhook, signing a user up to a mailing list, or pushing form data to another service.

Add <Field> child tags to include data in the POST body.

Action timing

Action tags only run when the form submits successfully. They evaluate their tokens at that point — not when the form loads — so you can use [[FieldName]] tokens to read user input. Actions run in document order; an action that fails throws away every action listed below it.

Example

<AddForm>
  <SilentPost Url="https://example.com/PostTest.aspx" If="[[P2]] = 5">
    <Field Name="param1" Value="1" />
    <Field Name="param2" Value="[[P2]]" />
  </SilentPost>

  <TextBox Id="txtParam2" DataField="P2" DataType="String" /><br />

  <AddButton Text="Add" /> <CancelButton Text="Cancel" />
</AddForm>

Properties

Property	Values	Default	Description
Url *	URL		The URL that will receive the POST request
If	expression		When omitted or true, this <SilentPost> runs. Otherwise it is skipped

* Required property

Child Tags

Tag	Required	Description
<Field>	optional	One key/value pair to include in the POST body. Add as many as needed

Property Details

• Url: The destination URL. May be absolute or relative. Field tokens (e.g. [[FieldName]]) and other XMP tokens are evaluated when the form submits, so the URL itself can include user-supplied data.

• If: A simple equality expression. When the result is true (or If is omitted), the <SilentPost> runs. Comparisons are text-only and case-insensitive. Use = for equality and <> for inequality.

  <SilentPost If="[[SubscribeMe]] = True" Url="https://lists.example.com/subscribe" />

<Field>

Adds a single name/value pair to the POST body. The fields are URL-encoded and sent with Content-Type: application/x-www-form-urlencoded.

Attribute	Values	Default	Description
Name *	string		Field name (the key in the POST body)
Value	string | token		Field value. Field tokens are evaluated at the time the form is submitted