event tracking are showing image source not attributes

Hi there, I use attributes in images for example the attributes would be imageBLACKLD, and that is how I used to know what event to what image.

now I see in google analytics event tracking is this:

<img class=”alignnone wp-image-5084″ src=https://www.******.com//wp-content/uploads/2017/11/black-300×300.jpg?x74449 alt=”imageBLACKLD” width=211 height=211

somethimes it shows this:

`<img class=”alignnone wp-image-5084″ src=htt ps://www.******.
com//wp-content/uploads/2017/11/black-300×300.jpg?x74449 alt=”imageBLACKLD” width=211 height=211
srcset=”https://www.*****.com/wp-content/uploads/2017/11/black-45×45.jpg 45w, ht tps://www.*****. com/wp-content/uploads/2017/11/black-66×66.jpg 66w, htt ps://www.*****. com/wp-content/uploads/2017/11/black-150×150.jpg 150w, https://www.*****. com/wp-content/uploads/2017/11/black-200×200.jpg 200w, htt ps://ww w.*****. com/wp-content/uploads/2017/11/black-300×300.jpg 300w, htt ps://ww w.*****. com/wp-content/uploads/2017/11/black-400×400.jpg 400w, htt ps://ww w.*****. com/wp-content/uploads/2017/11/black-600×600.jpg 600w, htt ps://ww w.*****. com/wp-content/uploads/2017/11/black-768×768.jpg 768w, htt ps://ww w.*****. com/wp-content/uploads/2017/11/black.jpg 800w” sizes=”(max-width: 211px) 100vw, 211px”>

How can I solve this and make it only shows the attributes imageBLACKLD not the full source.

Thank you