Hi, You can do this by manipulating the Callback functions of the "EditFeild". The following link might help you in giving you an overview on writing callbacks in App designer
Inside the callback, you can create a cell array which contains all possible values you want to display in the Listbox. Then you can use the length of the vector which is inputted through the "Editfeild" to choose a subset of the cell array and then manipulate the “Items” property of the "Listbox" accordingly. For example:
The following code snippet can be inserted in the “ValueChanged” Callback function of the Editfeild, so that when user enters the vectors as comma separated list and Press Enter, the Listbox Items changes according to the size of vector
value = app.VectorEditField.Value; % Vector is the name of the Editbox
value_Converted=str2double(strsplit(value,',')); %Convert string which is the default datatype for Editfeild(text) to double
value_size=length(value_Converted) % get the vector size
Total_Items={'Sample1','Sample2','Sample3'};
app.SamplesListBox.Items=Total_Items(1:value_size)% Samples is the name of listbox
Hope the above helps Thanks
