Trigger Slate when an app first opens

[rkpatel33]

Is there a way to make sure Slate triggers with window settings on an app when the app first opens?

Right now, every time I open Preview, it opens in its default position, and to get it to reposition the way I want, I have to trigger a shortcut or reload slate. This is the positioning I use for it:

alias center_x60_y100             move   screenOriginX+(screenSizeX*.20);screenOriginY                       screenSizeX*.60;screenSizeY

layout work_layout 'Preview':       ${center_x60y100}