diff --git a/cmd/node/execute.go b/cmd/node/execute.go
index 5fe12ef..d9599d7 100644
--- a/cmd/node/execute.go
+++ b/cmd/node/execute.go
@@ -18,6 +18,8 @@ import (
 	"github.com/rs/zerolog"
 )
 
+const B7S_TOPIC_FORMAT_PREFIX = "allora-topic-"
+
 // ExecuteRequest describes the payload for the REST API request for function execution.
 type ExecuteRequest struct {
 	execute.Request
@@ -51,32 +53,21 @@ func sendResultsToChain(log zerolog.Logger, appChainClient *AppChain, res node.C
 	log.Debug().Str("Topic", res.Topic).Str("worker mode", appChainClient.Config.WorkerMode).Msg("Found topic ID")
 
 	reqCtx := context.Background()
+	numTopicId := "0"
+	// remove prffix and suffix from "allora-topic-{xxx}-reputer/worker"
+	if strings.Contains(res.Topic, "reputer") {
+		numTopicId = res.Topic[len(B7S_TOPIC_FORMAT_PREFIX) : len(res.Topic)-len(WorkerModeReputer)-1]
+	} else {
+		numTopicId = res.Topic[len(B7S_TOPIC_FORMAT_PREFIX) : len(res.Topic)-len(WorkerModeWorker)-1]
+	}
+	topicId, err := strconv.ParseUint(numTopicId, 10, 64)
+	if err != nil {
+		log.Error().Str("Topic", res.Topic).Str("worker mode", appChainClient.Config.WorkerMode).Err(err).Msg("Cannot parse reputer topic ID")
+		return
+	}
 	if appChainClient.Config.WorkerMode == WorkerModeWorker { // for inference or forecast
-		topicId, err := strconv.ParseUint(res.Topic, 10, 64)
-		if err != nil {
-			log.Error().Str("Topic", res.Topic).Str("worker mode", appChainClient.Config.WorkerMode).Err(err).Msg("Cannot parse worker topic ID")
-			return
-		}
 		appChainClient.SendWorkerModeData(reqCtx, topicId, aggregate.Aggregate(res.Data))
 	} else { // for losses
-		// if topicId does not end in "/reputer
-
-		if !strings.HasSuffix(res.Topic, REPUTER_TOPIC_SUFFIX) {
-			log.Error().Str("Topic", res.Topic).Str("worker mode", appChainClient.Config.WorkerMode).Msg("Invalid reputer topic format")
-			return
-		}
-		// Get the topicId from the reputer topic string
-		index := strings.Index(res.Topic, "/")
-		if index == -1 {
-			// Handle the error: "/" not found in res.Topic
-			log.Error().Str("Topic", res.Topic).Msg("Invalid topic format")
-			return
-		}
-		topicId, err := strconv.ParseUint(res.Topic[:index], 10, 64)
-		if err != nil {
-			log.Error().Str("Topic", res.Topic).Str("worker mode", appChainClient.Config.WorkerMode).Err(err).Msg("Cannot parse reputer topic ID")
-			return
-		}
 		appChainClient.SendReputerModeData(reqCtx, topicId, aggregate.Aggregate(res.Data))
 	}
 }
@@ -101,7 +92,7 @@ func createExecutor(a api.API) func(ctx echo.Context) error {
 		})
 
 		// Get the execution result.
-		code, id, results, cluster, err := a.Node.ExecuteFunction(ctx.Request().Context(), execute.Request(req.Request), req.Topic)
+		code, id, results, cluster, err := a.Node.ExecuteFunction(ctx.Request().Context(), execute.Request(req.Request), buildb7sTopic(req.Topic))
 		if err != nil {
 			a.Log.Warn().Str("function", req.FunctionID).Err(err).Msg("node failed to execute function")
 		}
@@ -123,3 +114,14 @@ func createExecutor(a api.API) func(ctx echo.Context) error {
 		return ctx.JSON(http.StatusOK, res)
 	}
 }
+
+func buildb7sTopic(alloraTopic string) string {
+	res := ""
+	if strings.Contains(alloraTopic, "reputer") {
+		topicNum := alloraTopic[0 : len(alloraTopic)-8]
+		res = B7S_TOPIC_FORMAT_PREFIX + topicNum + "-" + WorkerModeReputer
+	} else {
+		res = B7S_TOPIC_FORMAT_PREFIX + alloraTopic + "-" + WorkerModeWorker
+	}
+	return res
+}
diff --git a/go.mod b/go.mod
index af3b19a..e580e8e 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.22.2
 require (
 	cosmossdk.io/math v1.3.0
 	github.com/allora-network/allora-chain v0.2.7
-	github.com/allora-network/b7s v0.0.2-0.20240624040826-bb318df1a6f7
+	github.com/allora-network/b7s v0.0.2-0.20240626021501-5a913378a8d8
 	github.com/cockroachdb/pebble v1.1.0
 	github.com/cosmos/cosmos-sdk v0.50.5
 	github.com/ignite/cli/v28 v28.3.0
diff --git a/go.sum b/go.sum
index 69bf067..4a5fd05 100644
--- a/go.sum
+++ b/go.sum
@@ -59,10 +59,8 @@ github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRF
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/allora-network/allora-chain v0.2.7 h1:wnxFV0JReueWagN/au4dG60a2I3gziM4OLOtrgUF5xY=
 github.com/allora-network/allora-chain v0.2.7/go.mod h1:nYJd641Y0iieiL+t+P5VOWnYdiAq2kiazdbL1Bi4jrw=
-github.com/allora-network/b7s v0.0.2-0.20240621170738-ab0de3bc5d87 h1:nAdc0StAeq27X8UUx7x+cWnW6TkoX0sLm1hQHxaE7Xw=
-github.com/allora-network/b7s v0.0.2-0.20240621170738-ab0de3bc5d87/go.mod h1:rJJrdC5Y83LEDFxo/iJp3JJpi8I6TJncOTigMWk8ieE=
-github.com/allora-network/b7s v0.0.2-0.20240624040826-bb318df1a6f7 h1:8Bo8i4uSjDwPir+CAxJyqiSRs/u6z0isK5txmf2Eq4Y=
-github.com/allora-network/b7s v0.0.2-0.20240624040826-bb318df1a6f7/go.mod h1:rJJrdC5Y83LEDFxo/iJp3JJpi8I6TJncOTigMWk8ieE=
+github.com/allora-network/b7s v0.0.2-0.20240626021501-5a913378a8d8 h1:w0MOdikeH7bmSoqJCgc9j9bRp7+sIRK7Rvf0P00S12g=
+github.com/allora-network/b7s v0.0.2-0.20240626021501-5a913378a8d8/go.mod h1:rJJrdC5Y83LEDFxo/iJp3JJpi8I6TJncOTigMWk8ieE=
 github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=