gtk:tree-store-set-value (store iter column value)

store -- a gtk:tree-store object
iter -- a valid gtk:tree-iter iterator for the row being modified
column -- an integer with the column number to modify
value -- a new value for the cell

Sets the data in the cell specified by iter and column. The type of value must be convertible to the type of the column. The gtk:tree-store implementation is deprecated since 4.10. Use the gtk:tree-list-model object instead.