How to set automatic deletion of old messages on my HTC One

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This feature will automatically delete old messages once the limit is reached.
1. Touch Messaging.
2. Touch the Menu icon.
3. Touch Settings.
4. Touch General.
5. Scroll to and touch Delete old messages.
6. Touch Text message limit.
7. Enter the required message limit.
8. Touch OK.
9. The message limit has been changed.