SOLIDWORKS Custom Functions

Greetings everyone,

Is it possible to create a macro with new functions that can be used in SOLIDWORKS equations?
For example, I would like to use the "LEFT()" function from Excel so I can retrieve the first characters of one string. 

<img width="931" height="212" alt="Image" src="https://github.com/user-attachments/assets/7348c1f6-9eea-4152-81f4-28b030e84ecf" />

Thank you in advance,
Raúl.