diff --git a/btc-UI/src/app/components/touch-pad-menu/touch-pad-menu.component.ts b/btc-UI/src/app/components/touch-pad-menu/touch-pad-menu.component.ts
index fbd4e96..ce9a82e 100755
--- a/btc-UI/src/app/components/touch-pad-menu/touch-pad-menu.component.ts
+++ b/btc-UI/src/app/components/touch-pad-menu/touch-pad-menu.component.ts
@@ -627,11 +627,17 @@ if (this.twoGroupLabels.includes(this.selectedLabel || '')) {
     if (this.selectedLabel === 'WSP') {
       this.wspTicketStage = 0; // Reset stage if WSP
     }
-    else if (/[0-9]/.test(key)) {
-       const currentValue = parseInt(this.padValue + key) || 0;
-       if (currentValue > 100) return;
-       this.padValue += key;
-     }
+    
+    // Clear the current row to reset any invalid state
+    this.selectionService.updatePartial({
+      label: this.selectedLabel || '',
+      numbers: [...this.selectedNumbers],
+      value: 0,
+      total: 0,
+      isBoxed: this.isBoxed
+    });
+    this.updateCanPrint();
+    return;
   }
 
   if (/[0-9]/.test(key)) {
@@ -640,37 +646,74 @@ if (this.twoGroupLabels.includes(this.selectedLabel || '')) {
     this.padValue += key;
   }
 
-    this.updateCanPrint();
+  this.updateCanPrint();
 
-    const value = parseFloat(this.padValue) || 0;
+  const value = parseFloat(this.padValue) || 0;
 
-    if (this.selectedLabel === 'WSP') {
-      const labels = ['WIN', 'SHP', 'PLC'];
-      const targetLabel = labels[this.wspTicketStage];
+  if (this.selectedLabel === 'WSP') {
+    const labels = ['WIN', 'SHP', 'PLC'];
+    const targetLabel = labels[this.wspTicketStage];
 
-      const updatedSelections = this.selectionService.getSelections().map(sel => {
-        if (sel.label === targetLabel && JSON.stringify(sel.numbers) === JSON.stringify(this.selectedNumbers)) {
-          const total = value * (sel.numbers?.length || 0) * 10;
-          return {
-            ...sel,
-            value,
-            total
-          };
-        }
-        return sel;
+    const updatedSelections = this.selectionService.getSelections().map(sel => {
+      if (sel.label === targetLabel && JSON.stringify(sel.numbers) === JSON.stringify(this.selectedNumbers)) {
+        const total = value * (sel.numbers?.length || 0) * 10;
+        return {
+          ...sel,
+          value,
+          total
+        };
+      }
+      return sel;
+    });
+
+    this.selectionService.setSelections(updatedSelections);
+
+    // Check if total is 0 for WSP (indicating invalid row)
+    const currentTotal = updatedSelections.find(sel => sel.label === targetLabel)?.total || 0;
+    if (currentTotal === 0 && value > 0) {
+      console.log('[DEBUG] WSP row invalid (total = 0), clearing row');
+      this.selectionService.setSelections(
+        updatedSelections.filter(sel => sel.label !== targetLabel || sel.numbers.length > 0)
+      );
+      this.wspTicketStage = 0;
+      this.padValue = '';
+      this.selectedNumbers = [];
+      this.selectionService.updatePartial({
+        label: '',
+        numbers: [],
+        value: 0,
+        total: 0,
+        isBoxed: false
       });
-
-      this.selectionService.setSelections(updatedSelections);
-      return;
     }
+    return;
+  }
 
-  // 🔵 Default path for non-WSP
+  // Default path for non-WSP
   this.selectionService.updatePartial({
     value,
     isBoxed: this.isBoxed,
     label: this.selectedLabel || '',
     numbers: [...this.selectedNumbers]
   });
+
+  // Check if total is 0 after updating (indicating invalid mathematical logic)
+  const currentRow = this.selectionService.getCurrentRow();
+  if (currentRow.total === 0 && value > 0 && currentRow.numbers.length > 0) {
+    console.log('[DEBUG] Row invalid (total = 0), auto-clearing current row');
+    this.selectionService.updatePartial({
+      label: '',
+      numbers: [],
+      value: 0,
+      total: 0,
+      isBoxed: false
+    });
+    this.selectedLabel = null;
+    this.selectedNumbers = [];
+    this.padValue = '';
+    this.isBoxed = false;
+    this.updateCanPrint();
+  }
 }
 //---------------------------------------------------------------------------------------------