Customer JSF Component Value Expression not work

Question

why my customer tag not work,
in my jsp
<q:my formatString="yyyy/mm/dd" current="#{LoginBean.date}"></q:my>the isLiteralText() always return true, and I can't get the correct value, #{LoginBean.date} is returned.
bellow is my tag source.
can anyone help me.
package jsf;
import javax.el.ValueExpression;
import javax.faces.component.UIComponent;
import javax.faces.webapp.UIComponentELTag;
public class MyCustomerTag extends UIComponentELTag {
    private String formatString;
    @Override
    public String getComponentType() {
        return "COMPONENT_TYPE";
    @Override
    public String getRendererType() {
        return "COMPONENT_TYPE";
    @Override
    public void release() {
        super.release();
        setFormatString(null);
    @Override
    protected void setProperties(UIComponent component)  {
        if (!(component instanceof UIDatePicker))
            throw new IllegalArgumentException("Component "+
                component.getClass().getName() +" is no UIDatePicker");
        component.setValueExpression("current", current);
        System.out.println(current.getExpressionString());
        System.out.println(current.isLiteralText());
        System.out.println((String) component.getAttributes().get("current"));
     * @return the formatString
    public String getFormatString() {
        return formatString;
     * @param formatString the formatString to set
    public void setFormatString(String formatString) {
        this.formatString = formatString;
    private ValueExpression current;
     * @return the value
    public ValueExpression getCurrent() {
        return current;
     * @param value the value to set
    public void setCurrent(ValueExpression current) {
        this.current = current;
}

Answer 1

I do not know what your native is, but there's quite a huge difference between "custom" and "customer". Look it up in your dictionary.