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Developing requirements > NX design and validation requirements

Defining variables for validation condition formulas

In validation condition formulas, variables refer to expression definitions by name. Variables can refer to definitions such as type, measure, unit, and value.

You enter variables and their details in the Define Variables step of the New Requirement wizard.

For example, a requirement condition formula that limits part dimensions is expressed as:

l + 2*w + 0.9*h < 200[mm]

In this example, you enter the variables as:

  • l = length in millimeters
  • w = width in millimeters
  • h = height in millimeters

Note: Certain Teamcenter preferences control default settings for the variables. If you have questions about variables, consult your Teamcenter administrator.

Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.plm00038/id1073935 · retrieved Fri Jul 10 2026 00:00:00 GMT+0000 (Coordinated Universal Time)