object that represents a text form field.
expression.TextInput
expression Required. An expression that returns a FormField object.
Remarks
If the TextInput property is applied to a FormField object that isn't a drop-down form field, the property won't fail, but the Valid property for the returned object will be False.
Use the Result property with the FormField object to return or set the contents of a TextInput object, as follows:
ActiveDocument.FormFields("Text1").Result = "John Doe"
Example
This example protects the active document for forms and deletes the contents of the form field named "Text1."
ActiveDocument.Protect Type:=wdAllowOnlyFormFields
ActiveDocument.FormFields("Text1").TextInput.Clear
If the first form field in the active document is a text form field that accepts regular text, this example sets the contents of the form field.
Set myField = ActiveDocument.FormFields(1)
If myField.Type = wdFieldFormTextInput And _
myField.TextInput.Type = wdRegularText Then
myField.Result = "Hello"
End If