Stretch parameter problems - Skewed geometry

[mmouvet]

Hello all, 

I thought I'd got a handle on how Dynamic Blocks behave, until I've come across a problem with my Ducted Fan Coil block, attached.

I want to apply stretch actions to width and length parameters, but I keep getting the problem as shown in the image.above. 

I don't want the skewed geometry. should I create the basic body of the fan coil, with parameters and actions first, then at details like spigot lengths and visibility states after?

The following image is what I'm trying to draw in plan view, to make it flexible to apply to most jobs involving this type of air con:

Thanks in advance.

Marc

[mmouvet · Accepted solution]

Wouldn't you know it? My length and width parameters had "chain action" on and that seems to be what was causing the issue. 

I suppose we can call this one answered!

[mmouvet]

Just to show how I wanted the block to end up, please see attached file.