[Ariel_Z]

Try this (note that I use form1.text for dubug only):

Sub Globals
    'Declare the global variables here.
    jump = -10
End Sub

Sub App_Start
    AddForm("Form1", "Form1")
    AddPanel("Form1", "Panel1", 0, Form1.Height, Form1.Width, 100)
    AddTimer("Timer1")
    panel1.color = cRed
    AddButton("Form1", "B2", 0, 0, 50, 50)
    form1.text = panel1.top
    timer1.interval = 10
    AddButton("Panel1", "B1", 90, 20, 50, 50)
    Form1.Show
    
End Sub

Sub Timer1_Tick
    panel1.top = panel1.top + jump
    form1.text = panel1.top

    If panel1.top + panel1.height <= form1.height Then
        panel1.top = form1.height - panel1.height
        timer1.enabled = False
    End If
End Sub

Sub b2_Click
    timer1.enabled = True
End Sub
Sub B1_Click

    AppClose
End Sub