How do I creat block for slider?

MIT App Inventor Help
1

can any one help me to creat block for
When Web1.GotText
// Set Label1 text to show the raw response content
Set Label1.Text to responseContent

If responseCode = 200
    // Inform the user that data was sent successfully
    Set Label1.Text to "Data sent successfully"
    
    // Decode the JSON response and store it in parsedData
    Set global parsedData to call Web1.JSONTextDecode(responseContent)
    
    // Optionally, update other UI elements or process parsedData as needed
    Set Slider1.Value to get property of global parsedData ("liters")
Else
    // Handle other response codes
    Set Label1.Text to "Error: " + responseCode
2
3

What have you tried ?