diff --git a/src/chain/WalletReactor.ts b/src/chain/WalletReactor.ts
index 9c13d6b..263c314 100644
--- a/src/chain/WalletReactor.ts
+++ b/src/chain/WalletReactor.ts
@@ -80,6 +80,10 @@ export class WalletReactor {
    * @returns
    */
   async executeSchedule(operation: IOperationData) {
+    let gas = await this.contract.methods
+      .executeBatch(operation.targets, operation.values, operation.datas, operation.predecessor, operation.salt)
+      .estimateGas({ from: this.account.address })
+    console.log(gas)
     let res = await this.contract.methods
       .executeBatch(operation.targets, operation.values, operation.datas, operation.predecessor, operation.salt)
       .send({ gas: 1000000 })