Please review the Q&A Usage Guidelines before posting, specifically point 1, "Read and search the manual before posting", and point 3, “Quote the applicable rule from the latest version of the manual in your question". Often, you'll find that by quoting the rule, you'll answer your own question.
Rule R6-a states that VEX EXP products are not permitted, unless specifically noted otherwise:
<R6> Robots are built from the VEX V5 system. Robots may be built ONLY using official VEX V5 components, unless otherwise specifically noted within these rules. Teams are responsible for providing documentation proving a part’s legality in the event of a question. Examples of documentation include receipts, part numbers, official VEX websites, or other printed evidence.
a. Products from the VEXpro, VEX EXP, VEX IQ, VEX GO, VEX 123, or VEX Robotics by HEXBUG product lines cannot be used for Robot construction, unless specifically allowed by a clause of <R7> or “cross-listed” as part of the VEX V5 Product lines. For example, the Shaft Base Pack (228-3506) is a VEX IQ component that can be found on the VEX “Drive Shafts” page, and is thus legal: https://www.vexrobotics.com/drive-shafts.html.
Furthermore, R6-d also specifically refers to the V5 Smart Motor (5.5W) as prohibited part.