Query as default value / initial data of a form input

[Emmanuelle_S]

everything is on the picture.
Why my number input (or string input if i switch) doesn't want to use the result of my query6 as default value (which would make my process so much easier )... the error is in red
my default value should be 139
i am very new at developping thank you for your nice help

[ScottR]

Maybe query6.data[0]['MAX(id_nombre)']

[Emmanuelle_S]

yes!! with ['0'] {{query6.data['0'].max_id_nombre}}
thank you so much @ScottR !!