Dynamic array block with adjustable source object size

[mdonovanPPE]

I'm trying to build a dynamic array where I have three grips to

1. set the array spacing

2. set the total length

3. set the size of the source object

I have tried with two blocks using different methods, but I cannot get all three grips to work at the same time!!!  So frustrating. Anyone got ideas?  

In the v1 block, I have an array path where I set the distance between items with an expression set to a horizontal constraint parameter.  I tried to adjust the size of the source object with a stretch action, but does not work. 

In the v2 block, I used an array action, but I cannot get the distance between objects to be an expression, it requires a fixed value.  

[Libbya]

See attached.

[mdonovanPPE]

Thanks for the idea.  That's an interesting idea to use a move action.  But it doesn't really hit my target, as there is a min and max length where this work.  I want to be able to stretch my object arbitrarily long, or short such that the straight section of that pline is to zero.

[mdonovanPPE]

Thanks for the idea.  That's an interesting idea to use a move action.  But it doesn't really hit my target, as there is a min and max length where this work.  I want to be able to stretch my object arbitrarily long, or short such that the straight section of that pline is to zero.

[Libbya]

In that case, you cannot satisfy all of your criteria within a dynamic block.

[Ed__Jobe]

Hi @Libbya Is there a way to get the Column Offset property of an Array Action to show up as a property? I've tried setting it to a user parameter, but that doesn't work.

[Libbya · Accepted solution]

Nope. 

You cannot dynamically alter the column offset of a dynamic array action. 

You cannot dynamically alter the source objects of an array created using the ARRAY command.  

[Libbya]

Here's one other version.  It does not perfectly satisfy the criteria, but you may be able to use the idea or modify it to make it functionally adequate.  Good luck.

[mdonovanPPE]

Thanks all for your help. At the very least, I now better understand the limitations.