Make sure to pay attention to the decimals you'll see in the left bottom corner of your DAW (applicamble for FL 12 only).
In 2015 I discovered my enthusiasm for music and audio I learned how to record and produce songs in my university student room with a just cheap laptop and FL Studio. Micahel Wynne is a recording artist and mixing engineer with a passion for teaching (and instant ramen). It may also be helpful to set the automation nodes to 'hold' mode so the tempo change happens instantly and stays at that value until the next node. Being an FL Studio Power User I also focus tutorials on getting the most out of FL Studio, My DAW of choice. Then right-click on the automation node and select paste value. Use the same way as in Method #1 to adjust the decimals. Right-click on the tempo and select copy value.Right click the 'Max' knob, and hit paste value. Then find your automation clip in the channel rack, and open up the channel options.