Hello,
I've checked different topics related to string conversion into numbers without an applicable tip.
I'm getting ...
because of ...
global_flow is a string received by bluetooth "76.26" and I though to convert into a number while I divide it by 100.
I know this is a newbie topic 
I'm still not familiar with MIT app inventor self convertions
does anyone catch my issue?
Your issue is that your string is inside a list, try like this:
Your variable global flow will then have a number value of 0.7626
(Label1.text will be a string)
Show how you send and receive the flow.
Hi @TIMAI2 and @ABG ,
I think you're right the issues is linked to the creation of the string though "call BluetoothLE1.RegisterForStrings" that give a list as output, if I'm not wrong...
I'll try to pick the first item and see what happen
...now I understand the reason for the double brackets displaying "global_flow" 
