If this is in a non-simulation (Std mode) schematic just double-left-click on the VCC symbol edit the text and press enter. If this is in a simulation schematic (Sim mode) then either: 1. Replace the VCC symbol with the +5V symbol then l double-left-click on the symbol and edit to replace the 5 with the required voltage value in the text and press enter;  2. Delete the VCC symbol and replace it with a net label called VCC then connect and configure a Voltage Source as described in Configuring Voltage Sources on (3) in (2) in: [https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a](https://easyeda.com/forum/topic/How-to-ask-for-help-and-get-an-answer-71b17a40d15442349eaecbfae083e46a)

@andyfierman Thank you very much.