How to read formControlRange Value after pressing a button

[jeroen.rottink]

Hi Alexandre,

Don't know if I see the complete picture.

I created an example 

• Added a HiddenField named 'formControlRange'
  
• A IWText holding the lines
  
  Code:

  <label for="formControlRange">Example Range input</label>
<input type="range" min="1" max="100" class="form-control-range" id="formControlRange" name="formControlRange">

• Two buttons. One with OnClick handler and one with OnAsyncClick handler. Both with following code
  
  Code:

  IWEdit1.Text := HiddenFields.Values['formControlRange'];

For the OnClick handler the hiddenfield is updated and sent to the server.
For OnAsyncClick this is not the case. No updated value is send to the server.

I thought a js call to AddChangedControl("formControlRange"); would be needed.