# Migrate webhook expressions

1. Check if there are any expressions that needs conversion: select expression from tbl\_webhook\_subscription where expression is not null and expression not like '%condition%' and unsubscription\_date is null;
2. Deploy the same version of the VMS client (as they will use for the upgrade) to your dev environment.
3. Create the same expressions in you dev environment as you found in step 1. Do this by creating a new webhook subscription with the same expression logic as the old webhook expression.
4. Doublecheck with AI that you created the same logic as before. Copy the preview of the new expression from the client and use the old expression from step 1.
5. Copy the expression from tbl\_webhook\_subscription.expression
6. Update the expression from step 1 with postman


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