diff --git a/src/tui/screens/invitations/InvitationScreen.tsx b/src/tui/screens/invitations/InvitationScreen.tsx
index 5ce111f..a137d42 100644
--- a/src/tui/screens/invitations/InvitationScreen.tsx
+++ b/src/tui/screens/invitations/InvitationScreen.tsx
@@ -751,7 +751,8 @@ export function InvitationScreen(): React.ReactElement {
                         acc[variable.variableIdentifier] = variable.value as XOInvitationVariableValue;
 
                         return acc;
-                      }, {} as Record<string, XOInvitationVariableValue>)
+                      }, {} as Record<string, XOInvitationVariableValue>),
+                      evaluationDecodeMode: 'bigint'
                     })}
                     
                     {/* Output value */}