I need just a thing, for obtain an integer to float which actor i should use??

There really is no need for this. You can simply connect an integer point output to any floating point input. I'm not sure why you would need a converter.

Best Wishes,
Mark

Can you give us an use-case for this?

 Yes, a use case would be helpful since the approach will depend on what you want to do with the float after conversion.

Can you give us an use-case for this? You can use Mutable Inputs / Outputs in Isadora.

1. Create a new User actor
2. Place a User Input
3. Place a User output
4. Connect the two together
5. Double click the User Input side, pick "Int"
6. Double click the User Output side, pick "Float"
7. Save the User actor.

If you wish to have numbers with .0 notation then you need a few other tricks.