Program able to run but robot didn't move

Technical Questions Robot Communication
1

private void btnStart_Click(object sender, EventArgs e)
{
Single a, b, c;
a = 20.0F;
b = 20.0F;
c = 30.0F;
if (cmbPrograms.SelectedItem != null)
{
try
{
robot.StartJOG(0, 1, 0, a, b, c);
Thread.Sleep(1000);

        robot.ImmStopJOG();
        robot.StartJOG(0, 2, 1, a, b, c);
        Thread.Sleep(1000);
        string selectedProgram = cmbPrograms.SelectedItem.ToString();
        robot.ProgramLoad("/fraser/" +  selectedProgram);
                            
        int loadStatus = robot.ProgramLoad(selectedProgram);
        Thread.Sleep(2000);
        if (loadStatus == 0)
        {
            robot.Mode(0);
            int num = robot.ProgramRun();
            lblStatus.Text = $"Running the {selectedProgram}...";
            robot.GetProgramState(ref state);
            robot.GetCurrentLine(ref line);
            robot.GetLoadedProgram(ref selectedProgram);
            robot.ProgramStop();
            robot.Mode(1);
        }
        else
        {
            lblStatus.Text = $"Failed to load {selectedProgram}.";
            MessageBox.Show($"Failed to load program: {selectedProgram} (Error Code: {loadStatus})");
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show($"Error: {ex.Message}");
    }
}
else
{
    MessageBox.Show("Please select a Lua program first.");
}

}

I have an issue where when the i click start, the status will say “Running ” But the robot is not moving at all. I added the StartJOG function to test either my robot have connection or not and it moving but when i use the ProgramRun function, nothing happen. I used windows application program on C# to make an sdk. Already imported both dll that needed but still can’t move. The status send by ProgramLoad and ProgramRun is 0 which means it success but why the robot still not move like in the program. Can anyone help me?