diff --git a/src/coex/strategy_team.rs b/src/coex/strategy_team.rs
index b113741..14a76dd 100644
--- a/src/coex/strategy_team.rs
+++ b/src/coex/strategy_team.rs
@@ -997,16 +997,14 @@ pub async fn execute_strategist_for_test_temp(
     }
 
     // 3rd filtering: BollingerBand (length 10, stddev: 3.0, 30m close price) the current price should be under the lowerband of BB.
-    let mut sma_30m_data: Vec<(String, Vec<SmaData>)> = Vec::new();
-    value_estimation_team::indicators::sma::sma(
+    let sma_30m_data: Vec<(String, Vec<SmaData>)> = value_estimation_team::indicators::sma::sma(
         30,
         &alldata.rt_price_30m_vec,
-        &mut sma_30m_data,
         &alldata.valid_symbol_vec,
     )
     .await?;
    
-    let mut bb10_30m_data: Vec<(String, Vec<BollingerBandData>)> = value_estimation_team::indicators::bollingerband::bollingerband(
+    let bb10_30m_data: Vec<(String, Vec<BollingerBandData>)> = value_estimation_team::indicators::bollingerband::bollingerband(
         10,
         3.0,
         &sma_30m_data,
@@ -1014,7 +1012,7 @@ pub async fn execute_strategist_for_test_temp(
         &alldata.valid_symbol_vec,
     )
     .await?;
-let mut bb10_30m_vec: Vec<BollingerBandData> = Vec::new();
+    let mut bb10_30m_vec: Vec<BollingerBandData> = Vec::new();
     let mut filtered_4th_symbols: Vec<(String, i64)> = Vec::new(); // (symbol, closetime)
     for element in filtered_3rd_symbols {
         let bb10_30m_option = bb10_30m_data.iter().position(|x| *x.0 == element.0);
diff --git a/src/value_estimation_team/indicators/sma.rs b/src/value_estimation_team/indicators/sma.rs
index 3ae5452..08fc6e2 100644
--- a/src/value_estimation_team/indicators/sma.rs
+++ b/src/value_estimation_team/indicators/sma.rs
@@ -27,9 +27,8 @@ impl SmaData {
 pub async fn sma(
     moving_number: usize,
     input_rt_data: &Vec<(String, Vec<RealtimePriceData>)>,
-    output_sma_data: &mut Vec<(String, Vec<SmaData>)>,
     valid_usdt_trades: &Vec<String>,
-) -> Result<(), Box<dyn std::error::Error + Send + Sync>> {
+) -> Result<Vec<(String, Vec<SmaData>)>, Box<dyn std::error::Error + Send + Sync>> {
     let instant = Instant::now();
 
     let mut sma_data_wrapper: Vec<(String, Vec<SmaData>)> = Vec::new();
@@ -65,7 +64,6 @@ pub async fn sma(
             None => {}
         }
     }
-    *output_sma_data = sma_data_wrapper;
     // println!("                                              indicators/sma{} 완료 elapsed:{:.2}s", moving_number, instant.elapsed().as_secs_f32());
-    Ok(())
+    Ok(sma_data_wrapper)
 }