[flexcoders] Trouble manually creating ToolTip with showEffect and hideEffect

[williamkusumo]

I use createToolTip to create a ToolTip manually, but somehow I couldn't get 
the showEffect 
and hideEffect to apply. I have properly set the ToolTipManager.showEffect and 
ToolTipManager.hideEffect to an effect, but it's not biting. The same effect 
works if I just use 
the 'tooltip' property of a component. Anyone knows why?