From d42ff2be866d0db48322097d8656540cb1bb1dff Mon Sep 17 00:00:00 2001
From: Chika <djchikalkin@gmail.com>
Date: Wed, 16 Dec 2020 20:53:11 +0300
Subject: [PATCH] fix validation: check null values

---
 .../CalculationStore/Effects/actions/calculate/validate.ts    | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/client/stores/CalculationStore/Effects/actions/calculate/validate.ts b/src/client/stores/CalculationStore/Effects/actions/calculate/validate.ts
index cd562dd..5e96134 100644
--- a/src/client/stores/CalculationStore/Effects/actions/calculate/validate.ts
+++ b/src/client/stores/CalculationStore/Effects/actions/calculate/validate.ts
@@ -4,7 +4,9 @@ import { TElements } from 'core/types/Calculation/Store/elements';
 import CalculationStore from '../../..';
 
 const VALIDATIONS = {
-  IS_NULL: valueName => CalculationStore.getValue(valueName) === undefined,
+  IS_NULL: valueName =>
+    CalculationStore.getValue(valueName) === undefined ||
+    CalculationStore.getValue(valueName) === null,
   LESS_ZERO: valueName => CalculationStore.getValue(valueName) < 0,
   LESS_OR_EQUALS_ZERO: valueName => CalculationStore.getValue(valueName) <= 0,
 };