diff --git a/src/editor/core/draw/control/Control.ts b/src/editor/core/draw/control/Control.ts
index 231a023..1efcc76 100644
--- a/src/editor/core/draw/control/Control.ts
+++ b/src/editor/core/draw/control/Control.ts
@@ -712,7 +712,7 @@ export class Control {
         } else if (type === ControlType.CHECKBOX) {
           const checkbox = new CheckboxControl(element, this)
           this.activeControl = checkbox
-          const codes = value?.split(',') || []
+          const codes = value ? value.split(',') : []
           checkbox.setSelect(codes, controlContext, controlRule)
         } else if (type === ControlType.RADIO) {
           const radio = new RadioControl(element, this)
diff --git a/src/editor/core/event/handlers/mousedown.ts b/src/editor/core/event/handlers/mousedown.ts
index b0ec76f..d3cc682 100644
--- a/src/editor/core/event/handlers/mousedown.ts
+++ b/src/editor/core/event/handlers/mousedown.ts
@@ -91,7 +91,7 @@ export function mousedown(evt: MouseEvent, host: CanvasEvent) {
       if (!control) {
         draw.getCheckboxParticle().setSelect(curElement)
       } else {
-        const codes = control?.code?.split(',') || []
+        const codes = control?.code ? control.code.split(',') : []
         if (checkbox?.value) {
           const codeIndex = codes.findIndex(c => c === checkbox.code)
           codes.splice(codeIndex, 1)