Solve differential equations with boundary conditions

[toscanodiego (Diego Tosano)]

Hello Friends,
I am new at Mathematica and I am trying to solve the next differential equation,

sol = DSolve[y'[x] == y[x], y[x], x]

But when I set boundary conditions, I receive the next message. Can anyone help me?

[nathanshpritz]

Open in Wolfram Cloud ↗

Sometimes you may have to clear your variables using Clear[…]

Otherwise, this worked for me. Same code you have.

[mariuszi28cg (Mariusz Iwaniuk)]

At first you may have to clear your all variables using:

ClearAll["`*"]; Remove["`*"];

and now it should work.

[toscanodiego (Diego Tosano)]

Thank you, I appreciate your help.