Create a formula using multiple attributes in a dynamic block

[michael]

I am trying to have an attribute in a dynamic block calculate a formula using other attributes in the block. It is a simple span formula, basically A/B*C=D

The Attributes are as follows.

A = D-1 (the attribute is a measurement)

B = Span (the attribute is a measurement)

C = Load (the attribute is a number)

D - is the attribute that I am trying to have calculate that formula.

Any ideas?

[3wood]

You can try the block in attached file. Edit value of A, B or C and value of D will be updated after regen.

You can also refer to a similar question about how to use Field in attributes in post below:

Solved: Re: Increase attribute's number - Autodesk Community - AutoCAD