# Change opacity of the shape to reveal the text on mouse click
**URL:** https://discourse.psychopy.org/t/change-opacity-of-the-shape-to-reveal-the-text-on-mouse-click/31431
**Category:** Builder
**Created:** [October 19, 2022, 8:19am UTC](https://discourse.psychopy.org/t/change-opacity-of-the-shape-to-reveal-the-text-on-mouse-click/31431 "2022-10-19T08:19:44Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Dasha\_Mesquita](https://discourse.psychopy.org/u/Dasha_Mesquita)
#### Post date: [October 19, 2022, 8:19am UTC](https://discourse.psychopy.org/t/change-opacity-of-the-shape-to-reveal-the-text-on-mouse-click/31431/1 "2022-10-19T08:19:44Z")
I need to reveal the text under an image with a mouse click. What are the steps to change the opacity of the shape on click that covers the text in Builder (or in Code, though I am a novice)?
\*\*OS Win11
\*\*PsychoPy version 2022.2.4
---
### Author:  [@ajus](https://discourse.psychopy.org/u/ajus)
#### Post date: [October 19, 2022, 10:06am UTC](https://discourse.psychopy.org/t/change-opacity-of-the-shape-to-reveal-the-text-on-mouse-click/31431/2 "2022-10-19T10:06:57Z")
Hi @Dasha_Mesquita,
if you have an image component `image_stim` and a mouse component `mouse`, you can add a code component to your routine and have
**Each frame**
```auto
if mouse.isPressedIn(image_stim):
image_stim.opacity = 0
```
---
### Author:  [@Dasha\_Mesquita](https://discourse.psychopy.org/u/Dasha_Mesquita)
#### Post date: [October 21, 2022, 11:04am UTC](https://discourse.psychopy.org/t/change-opacity-of-the-shape-to-reveal-the-text-on-mouse-click/31431/3 "2022-10-21T11:04:04Z")
@ajus, I did what you suggested and had this error. Do you have any idea what it means and what to do with this?
Traceback (most recent call last):
File “C:\Users\dasha\Documents\PsychoPy\_TESTS\_for PhD\LLAMA\untitled\_LLAMA\_B\_lastrun.py”, line 116, in
trials\_LLAMA\_B = data.TrialHandler(nReps=None, method=‘random’,
File “C:\Program Files\PsychoPy\lib\site-packages\psychopy\data\trial.py”, line 147, in **init**
self.nReps = int(nReps)
TypeError: int() argument must be a string, a bytes-like object or a number, not ‘NoneType’
################# Experiment ended with exit code 1 [pid:3864] #################
709.4300 EXP Imported C:/Users/dasha/Documents/PsychoPy\_TESTS\_for PhD/LLAMA/Llama\_B\_test.xlsx as conditions, 20 conditions, 3 params
709.4327 INFO Loaded monitor calibration from [‘2022\_10\_17 10:29’]
---
### Author:  [@ajus](https://discourse.psychopy.org/u/ajus)
#### Post date: [October 21, 2022, 11:52am UTC](https://discourse.psychopy.org/t/change-opacity-of-the-shape-to-reveal-the-text-on-mouse-click/31431/4 "2022-10-21T11:52:34Z")
This seems to have nothing to do with the code. In your loop “trials\_LLAMA\_B” the nReps field seems to be empty. It must contain the number of repetitions you need.
---
### Author:  [@Dasha\_Mesquita](https://discourse.psychopy.org/u/Dasha_Mesquita)
#### Post date: [October 24, 2022, 6:19am UTC](https://discourse.psychopy.org/t/change-opacity-of-the-shape-to-reveal-the-text-on-mouse-click/31431/5 "2022-10-24T06:19:14Z")
Thank you so much! I fixed it and everything is working!)) I was wondering if you could help me with another question. I tried to find the solution online but I am not even sure how to formulate my question)
I want people to click, see a word for several seconds, then the word disappears, and to see it again a person needs to click once more.
I forgot to add, that I need to have several clickable images on the screen. (maybe that is important)
---
### Author:  [@ajus](https://discourse.psychopy.org/u/ajus)
#### Post date: [October 24, 2022, 8:27am UTC](https://discourse.psychopy.org/t/change-opacity-of-the-shape-to-reveal-the-text-on-mouse-click/31431/6 "2022-10-24T08:27:30Z")
So the timeline would be: I click an image, and it disappears to reveal a text. After some time (how long?) the text disappears, I click again (where?), and the text reappears. Right?
How should it work with different images? Can I click all images? Or just one? Do they all do the same thing independently from another?