Problem with dates change

[Serma-Dev]

Hi there,
I've got a problem with the function : .items.change_multiple_column_values
I can't succeed to change the date on monday.
Maybe I didn't fond the good way to send my datas.
I tried :

• a Dictionnary like : {'column_id': { 'from' : 'start_date' , 'to' : 'end_date'} }
• Another dictionnary : { 'column_id' : 'start_date - end_date'}
  Hope you can help me.
  I'm waiting for your answer.