Controlling dialogs position before its shown

[zeljkosh]

Is there a way to accomplish this using standard tornadofx dialog builder ?
The only way i accomplished something remotely close to this is , using

 this.layoutX = 200.0 //any double value
 this.layoutX = 200.0 //any double value

What this does is the windows shows up on its desired position first, then the settings are applied and dialog is in the position i want it.

Perhaps creating separate dialog then setting up desired position and then calling show method would be better, but still it kinda feels strange that position cant be set before the dialog is shown