The code is the following codebehind as well as the designer, the idea is to change the text of the h3 when changing the radiobutton selection, but it does not execute the jquery code the text remains in Add New Product / Service and does not change a Disassociate Product / Service
protected void rdasounoauno_CheckedChanged(object sender, EventArgs e)
{
string script = "cambiatexto();";
ScriptManager.RegisterStartupScript(this, typeof(Page), "F1", script, true);
}
<div class="panel panel-primary">
<div class="panel-heading" >
<h3 class="panel-title" id="panelconteasocia">
Agregar Nuevo Producto/Servicio
</h3>
</div>
</div>
<script language="javascript" type="text/javascript">
function cambiatexto() {
$("#panelconteasocia").text = "Desasociar Producto/Servicio";
}
</script>