diff --git a/src/Extensions.ts b/src/Extensions.ts
index b950c68..a83d717 100644
--- a/src/Extensions.ts
+++ b/src/Extensions.ts
@@ -55,5 +55,34 @@ export const extensions: Extension[] = [
     supportedMarkets: {
       '1_USDC_0xc3d688B66703497DAA19211EEdff47f25384cdc3': null
     }
+  },
+  {
+    id: 'collateral_swap',
+    name: 'Collateral Swap',
+    description: 'Enables swapping collateral on open loan positions without the need to repay the loan, in a single transaction',
+    developer: 'Wido Labs',
+    links: {
+      github: 'https://github.com/widolabs/compound-collateral-extension-ui',
+      website: 'https://www.joinwido.com/'
+    },
+    permissions: {
+      sign: '*',
+      trx: [
+        {
+          contract: '$operator',
+          abi: 'swapCollateral((address,uint256),(address,uint256),((uint8,bytes32,bytes32),(uint8,bytes32,bytes32)),(address,address,bytes),address)',
+          params: '*'
+        }
+      ]
+    },
+    source: {
+      url: "https://ipfs.fleek.co/ipfs/QmcEEQekV9Vz4oN519uBsPLqjXUs7YathsvGvjNtbC3Y88/embedded.html"
+    },
+    supportedMarkets: {
+      '1_USDC_0xc3d688B66703497DAA19211EEdff47f25384cdc3': '0xaAA9f2FeE419977804eBD06F6E121f76FbcE8498',
+      '1_ETH_0xA17581A9E3356d9A858b789D68B4d866e593aE94': '0xaAA9f2FeE419977804eBD06F6E121f76FbcE8498',
+      '137_USDC_0xF25212E676D1F7F89Cd72fFEe66158f541246445': '0x17000CdCCCFf2D0B2d8958BA40c751Fa9b4BE089',
+      '42161_USDC.e_0xA5EDBDD9646f8dFF606d7448e414884C7d905dCA': '0x74436167012475749168f33324e84990C8013647'
+    }
   }
 ];
diff --git a/src/Permissions.ts b/src/Permissions.ts
index 5e348b7..c578c07 100644
--- a/src/Permissions.ts
+++ b/src/Permissions.ts
@@ -93,6 +93,9 @@ function isTypeParams(params: any[]): params is [ string, TypeParams ] {
 }
 
 function checkSendTransaction(params: any[], { trx }: Permissions, operator: string | null): null | string {
+  console.log('params', params);
+  console.log('trx', trx);
+  console.log('operator', operator);
   if (trx === '*') {
     return null;
   } else {
@@ -105,6 +108,8 @@ function checkSendTransaction(params: any[], { trx }: Permissions, operator: str
         let contract = trxPerm.contract;
         if (contract === '$operator') {
           if (!operator) {
+            console.log('Operator is null');
+            console.log('operator', operator);
             return false;
           }
 
@@ -112,6 +117,9 @@ function checkSendTransaction(params: any[], { trx }: Permissions, operator: str
         }
 
         if (!strEq(contract, callParams.to)) {
+          console.log('Contract is not equal to callParams.to');
+          console.log('contract', contract);
+          console.log('callParams.to', callParams.to);
           return false;
         }
       }
@@ -129,12 +137,18 @@ function checkSendTransaction(params: any[], { trx }: Permissions, operator: str
         }
         let func = Object.values(iface.functions)[0];
         if (!strEq(callParams.data.slice(0, 10), iface.getSighash(func.name))) {
+          console.log(`Mismatch. Expected: ${iface.getSighash(func.name)}, Received: ${callParams.data.slice(0, 10)}`);
+          console.log('callParams.data', callParams.data);
+          console.log('func.name', func.name);
+          console.log('abi', abi.toString());
           return false;
         }
         let funcParamsEnc = callParams.data.slice(10);
         if (trxPerm.params === undefined || trxPerm.params === '*') {
           return true;
         } else {
+          console.log('trxPerm.params is not equal to undefined or "*"');
+          console.log('trxPerm.params', trxPerm.params);
           let decodedParams = iface.decodeFunctionData(func, callParams.data);
           let matchesParams = trxPerm.params.every((param, index) => {
             let decodedParam = decodedParams[index];