Solid hatch not updating

[Ebbe_T_Hansen]

The attached drawing contains the block UPE, showing the standard steel profile with that name.

The different sizes are controlled by a number of dynamic parameters and actions, and the parameters are controlled by a block table. This was a little of an experiment, but apparently the question if you can use a combination of a block table and dynamic parameters is yes.

The block has visibility states that allow the profile to appear as contour, as contour with different hatch patterns or as hidden line.

This also seems to work right, but with one exception: The Solid hatch is not updating when the size of the profile is changed. After the latest edits it simply disappears. What could be the reason for that?

Thanks in advance for any help on this.

[Libbya · Accepted solution]

The reason the hatch loses associativity is because the linear parameters R and R1 are drawn at 10 units and the two radii are drawn at 8.5 units.  As soon as the radius is changed, a gap forms between the arcs and the adjascent lines because the arcs are only scale 85% of the distance that the lines are stretched.  

Changing the R and R1 parameters to 8.5 was not the correct way to fix it as then there would not be a row in the properties table that matched the default state.  The arcs needed to be scaled from 8.5 to 10 and then the hatches updated to the new profile.  While fixing it I deleted R parameter and associated the scale and stretch actions with R1.  To do so the scale needed to be made independent and the base point moved to the correct location.  The scale also had to be added to the appropriate other action selection sets so the base point was always in the correct place.