What am I doing wrong? When I execute the flowchart it does the first command then it day "Variable MERCURY not found!"

7 Raple A Fleet kale olla pp Made in Window Generate Hele 02% RE Start a search A do DPM Run Mode Ink Window Generate Help 80% main Display Menu 1 Mercury 2 VAS 3. Errth 4 Mars 5. Exit the Pro GET Planets 1 = Mercury - Venis PUT Mercury average distance from te sun: $7.9 million kilometers Mass: 33 1023ke-173 degrees Celsius PUT Venus avorare distance from the sun 108.2 million kilometers Masa: 487 1094 KR-472 deres Calstus PUT" Earth average distance from te sun 1496 million kilometers Mes 5 957 10/24k 50 1050 deset Colors 80% 2 = Venus AT Venta distance from the silian lilomster Mass: 437 10 24 kt -42 degea Colis PUT Earth average distance frost sun:149.5 million kilometers lass: 5.967 10 24 ks -50 to S an PUT "MASA distance from the com 27.9 million kilometers Mass 044 1024 40 to 20 degrees Celsius PUT 'Exit Program