# The function enableCollapse() does not exist
**URL:** https://discourse.processing.org/t/the-function-enablecollapse-does-not-exist/17718
**Category:** Libraries
**Created:** [February 11, 2020, 6:23am UTC](https://discourse.processing.org/t/the-function-enablecollapse-does-not-exist/17718 "2020-02-11T06:23:33Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@yjoeyj](https://discourse.processing.org/u/yjoeyj)
#### Post date: [February 11, 2020, 6:23am UTC](https://discourse.processing.org/t/the-function-enablecollapse-does-not-exist/17718/1 "2020-02-11T06:23:33Z")
Hello All,
First time user of Processing and stuck on a script I obtained from github [Link](https://github.com/JLSolerLlorens/Geophonino-GUI/blob/master/GuiGeophonino.pde). I cut down the script to shorten it for here, so hope I didn’t cut off too much:
```auto
import controlP5.*;
import processing.serial.*;
/*Initialization of variables*/
Serial myPort;
String val; //store data received in the serial port
boolean firstContact = false; //is false while Processing isn't connected to Arduino
ControlP5 cp5; //cp5 printer for GUI
DropdownList ddlCom,ddlGain,ddlSr; //DDL Drop Down List objtects
PFont fontTit = createFont("arial",20);
PFont fontTex = createFont("arial",12);
PFont fontTexMini = createFont("arial",10);
Textfield status; //Text field for notifications to the user
int myColorBackground = 255; //Default Background
int state=1; //1-Conf. connection 2-Conf. acquisition 3-Ready for data acquisition 4-Acquiring data 5-Reciving file 7-File Recived
OutputStream OutputFileRecived; //Writer for file received over serial port
byte [] FileBuffer=new byte[0];
String folder=null; //Folder when the file downloaded from Arduino will be saved
String overwriteFile="N"; //When selected name already exist, user can overwrite it. By default, N=false.
/* Variables progress bar */
int count=0;
int ini=0;
Integer duration=0;
Integer tamFile=0;
/* End variables progress bar */
void setup() {
size(800,500); //Window size
cp5 = new ControlP5(this);
// Print Status bar
cp5.addTextlabel("textWarnings").setText("Current status: ")
.setPosition(50,470).setColorValue(0).setFont(fontTex);
status = ((Textfield)cp5.getController("Status"));
status.setValue("Welcome Geophonino configuration");
ddlCom = cp5.addDropdownList("serial").setPosition(270, 75);
for (int i = 0; i < Serial.list().length; i = i+1) {
ddlCom.addItem(Serial.list()[i], i+1);
}
if (Serial.list().length==0)
{
status.setValue("Error, COM Port not detected, connect Geophonino and press CONNECT... button.");
}
customizeDl(ddlCom);
}
void customizeDl(DropdownList ddl) {
// Format DropDownList
ddl.enableCollapse();
ddl.setBackgroundColor(color(190));
ddl.actAsPulldownMenu(true);
ddl.setItemHeight(20);
ddl.setBarHeight(15);
ddl.captionLabel().style().marginTop = 3;
ddl.captionLabel().style().marginLeft = 3;
ddl.valueLabel().style().marginTop = 10;
ddl.setColorBackground(color(200, 200, 200));
ddl.setColorActive(color(0, 128));
ddl.setColorLabel(color(0,0,0));
}
```
The script should work as it has been tested by others but gives a general error ‘The function enableCollapse() does not exist’. Any ideas what I’m doing wrong?
---
### Author:  [@black](https://discourse.processing.org/u/black)
#### Post date: [February 11, 2020, 3:25pm UTC](https://discourse.processing.org/t/the-function-enablecollapse-does-not-exist/17718/2 "2020-02-11T15:25:36Z")
> **[sojamo/controlp5](https://github.com/sojamo/controlp5)**
>
> A gui library for processing.org. Contribute to sojamo/controlp5 development by creating an account on GitHub.
As you can see developer mentioned -
- **ColorWheel** a color wheel picker, use the arrow on the left to change saturation [ControlP5colorWheel](https://github.com/sojamo/controlp5/blob/master/examples/controllers/ControlP5colorWheel/ControlP5colorWheel.pde)
- **DropdownList** (use ScrollableList instead)
- **Group** for grouping and nesting controllers [ControlP5group](https://github.com/sojamo/controlp5/blob/master/examples/controllers/ControlP5group/ControlP5group.pde)
- **Icon** adds Icon support, an Icon behaves like a Button or Toggle [ControlP5icon](https://github.com/sojamo/controlp5/blob/master/examples/controllers/ControlP5icon/ControlP5icon.pde)
- **ListBox** (use ScrollableList instead)
---
### Author:  [@yjoeyj](https://discourse.processing.org/u/yjoeyj)
#### Post date: [February 11, 2020, 7:57pm UTC](https://discourse.processing.org/t/the-function-enablecollapse-does-not-exist/17718/3 "2020-02-11T19:57:36Z")
Thanks! You saved my day
---
### Author:  [@raysoduran](https://discourse.processing.org/u/raysoduran)
#### Post date: [July 25, 2021, 12:06am UTC](https://discourse.processing.org/t/the-function-enablecollapse-does-not-exist/17718/4 "2021-07-25T00:06:21Z")
Hola, Amigo como lograste corregir el error?, Tengo el mismo archivo pero me sigue dando error
---
### Author:  [@jeremydouglass](https://discourse.processing.org/u/jeremydouglass)
#### Post date: [August 18, 2021, 5:11pm UTC](https://discourse.processing.org/t/the-function-enablecollapse-does-not-exist/17718/5 "2021-08-18T17:11:27Z")
@raysoduran – La solución es la dada por @black. Probablemente esté usando una de las funciones en esa lista, y en su lugar debería usar una función diferente (por ejemplo, ScrollableList). Pero si aún tiene un problema, debe decir más sobre su problema en una nueva discusión separada.