i use google maps api and can't remove single marker

[Asaf Shay]

in my example it's show that I put only one marker but lets say I add much more markers and I only want to remove marker in my array in index 0.

protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
if (CheckBox1.Checked == true)
{
GMap1.addGMarker(markers1[0]);
}
else
{
//i dont know what to put here

    }
}