From d29fb4c5720b1cae856a5ef1ecebfbe399b8e8fe Mon Sep 17 00:00:00 2001
From: Stefan VanBuren <svanburen@buf.build>
Date: Wed, 18 Dec 2024 09:25:55 -0500
Subject: [PATCH] Fix README cel expression

Matches [`protovalidate-go`'s
usage](https://github.com/bufbuild/protovalidate-go?tab=readme-ov-file#usage).

Fixes #229.
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index e9835998..c01515a6 100644
--- a/README.md
+++ b/README.md
@@ -67,7 +67,7 @@ message Transaction {
   string price = 4 [(buf.validate.field).cel = {
     id: "transaction.price",
     message: "price must be positive and include a valid currency symbol ($ or £)",
-    expression: "(this.startswith('$') or this.startswith('£')) and float(this[1:]) > 0"
+    expression: "(this.startsWith('$') || this.startsWith('£')) && double(this.substring(1)) > 0"
   }];
 
   option (buf.validate.message).cel = {