From c3742e15858d6bed86723e81b14481c6cadcdb29 Mon Sep 17 00:00:00 2001
From: Scott Pouliot <spouliot@scppowdercoating.com>
Date: Sun, 24 May 2026 14:27:42 -0400
Subject: [PATCH] Fix NCalc type error when evaluating AI-generated formulas

NCalc2 operates on double internally; passing decimal parameters caused
'Operator * cannot be applied to double and decimal' at runtime.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .../Services/CustomFormulaAiService.cs                          | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/PowderCoating.Infrastructure/Services/CustomFormulaAiService.cs b/src/PowderCoating.Infrastructure/Services/CustomFormulaAiService.cs
index 0420d95..ce733e4 100644
--- a/src/PowderCoating.Infrastructure/Services/CustomFormulaAiService.cs
+++ b/src/PowderCoating.Infrastructure/Services/CustomFormulaAiService.cs
@@ -181,7 +181,7 @@ Rules:
             foreach (var kv in variables)
             {
                 expr.Parameters[kv.Key] = kv.Value.ValueKind == JsonValueKind.Number
-                    ? (object)kv.Value.GetDecimal()
+                    ? (object)kv.Value.GetDouble()
                     : (object)(kv.Value.GetString() ?? "");
             }