Hi ashadako, 

If you would like to change only specific block icon IO format ->  

1. Click on the APL_BLOCK_ICON 

2. Configurations-> Analog Value Format1 -> 4. You may play around with it. 

# means displays a digit or no output. 

0 means displays a digit or a zero. 

. means placeholder for decimal character.

% means placeholder for percentage

, means separator

e- , e+ means scientific format

- + $ () means display of a literal character.

\ means display the next character in the format character sequence

"ABC" displays the string in inverted commas

 If you do not understand some of the attribute, press Shift+F1 , click on the attribute, you will have the help file.