From e4458b48e005667ae903ee6965e1a299546267f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Iv=C3=A1n=20Ovejero?= <ivov.src@gmail.com>
Date: Mon, 6 Feb 2023 10:26:12 +0100
Subject: [PATCH] fix(editor): Fix mapping to empty expression input (#5367)

:bug: Fix mapping to empty expression input
---
 packages/editor-ui/src/components/ParameterInputFull.vue | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/editor-ui/src/components/ParameterInputFull.vue b/packages/editor-ui/src/components/ParameterInputFull.vue
index 0861eef12..4d015a829 100644
--- a/packages/editor-ui/src/components/ParameterInputFull.vue
+++ b/packages/editor-ui/src/components/ParameterInputFull.vue
@@ -256,7 +256,7 @@ export default mixins(showMessage).extend({
 					) {
 						updatedValue = `${prevValue} ${data}`;
 					} else if (prevValue && ['string', 'json'].includes(this.parameter.type)) {
-						updatedValue = `=${prevValue} ${data}`;
+						updatedValue = prevValue === '=' ? `=${data}` : `=${prevValue} ${data}`;
 					} else {
 						updatedValue = `=${data}`;
 					}