@Vaibhav I am getting the following error while executing the blocks given by you.
Attempt to invoke virtual method 'java.lang.Class java.lang.Object.getClass()' on a null object reference
*Note:* You will not see another error reported for 5 seconds.
You are calling multiple spreadsheets in screen initialize and adding those values into multiple variables but before you getting such values you are using that variables in the screen initialise block itself. How will it work? Please check up your blocks