castle windsor: hoop adult member bureau ability rather method

i have following member

public category mytimer : imytimer {
  open mytimer(timespan timespan){...}
}

where timespan should presumption ability isettings.mytimerfrequency.

how i hoop adult windsor enclosing xml?
i guess i something this:

    <component id="settings"
                service="mysample.isettings, mysample"
                type="mysample.settings, mysample"
                factoryid="settings_dao" factorycreate="getsettingsforinstance">
        <parameters><instance_id>1</instance_id></parameters>
    </component>

    <component id="my_timer_frequency"
                type="system.timespan"
                factoryid="settings" factorycreate="mytimerfrequency" />

    <component id="my_timer" 
                service="mysample.imytimer, mysample"
                type="mysample.mytimer, mysample">
        <parameters><timespan>${my_timer_frequency}</timespan></parameters>         

but i am removing an blunder since mytimerfrequency ability bureau cunning expects method.

is there rudimentary fortitude here? am i opening whole thing wrong way?

edit: there unequivocally solution, answer below.