Apache Royale : equivalent of enabled property on j:Button

I have issue on using "enabled" with j:Button.

I know that I must add functionality with this bead :

<j:Button id="bp_next" text="Next" >
    <j:beads>
        <j:Disabled/>
    </j:beads>
</j:Button>

But now I have the button showing disabled state.

How to change enabled/disabled with AS3 code as there is no enabled property on j:Button ?

Regards

There are a couple of ways this can be achieved.

Access the bead dynamically on the button

(bp_next.getBeadByType(Disabled) as Disabled).disabled = true|false;

or,

Disabled(bp_next.getBeadByType(Disabled)).disabled = true|false;

Bind a variable to the bead's disabled field

<j:Button localId="bp_next" text="Next" >
    <j:beads>
        <j:Disabled disabled="{someVariable}"/>
    </j:beads>
</j:Button>

In AS3:

someVariable = true|false;

Add an id to the disabled bead

<j:Button localId="bp_next" text="Next" >
    <j:beads>
        <j:Disabled localId="bp_next_disabled"/>
    </j:beads>
</j:Button>

In AS3:

bp_next_disabled.disabled = true|false;