1 files changed, 5 insertions, 2 deletions
diff --git a/src/main/java/org/traccar/protocol/H02ProtocolEncoder.java b/src/main/java/org/traccar/protocol/H02ProtocolEncoder.java
index 7fca0f93e..86b8c80d4 100644
--- a/src/main/java/org/traccar/protocol/H02ProtocolEncoder.java
+++ b/src/main/java/org/traccar/protocol/H02ProtocolEncoder.java
@@ -18,6 +18,8 @@ package org.traccar.protocol;
 
 import org.traccar.Protocol;
 import org.traccar.StringProtocolEncoder;
+import org.traccar.config.Keys;
+import org.traccar.helper.model.AttributeUtil;
 import org.traccar.model.Command;
 
 import java.util.Date;
@@ -58,8 +60,9 @@ public class H02ProtocolEncoder extends StringProtocolEncoder {
                 return formatCommand(time, uniqueId, "S20", "1", "0");
             case Command.TYPE_POSITION_PERIODIC:
                 String frequency = command.getAttributes().get(Command.KEY_FREQUENCY).toString();
-                if (getIdentityManager().lookupAttributeBoolean(
-                        command.getDeviceId(), getProtocolName() + ".alternative", false, false, true)) {
+                if (AttributeUtil.lookup(
+                        getCacheManager(), Keys.PROTOCOL_ALTERNATIVE.withPrefix(getProtocolName()),
+                        command.getDeviceId())) {
                     return formatCommand(time, uniqueId, "D1", frequency);
                 } else {
                     return formatCommand(time, uniqueId, "S71", "22", frequency);