ADC Configured 5 channels but when iam commented 4 reading only one, then iam getting incorrect values

[Sonu_1231]

iam using STM32L051K8T6 Below attaching the code 

[Sonu_1231]

IOC Config file

[TDK]

Here is an example for how to use the ADC in polling mode:

STM32CubeL0/Projects/NUCLEO-L031K6/Examples/ADC/ADC_RegularConversion_Polling at fbe75a8da1701a1b34dcb9f990f53dec46ab92fa · STMicroelectronics/STM32CubeL0