What is wrong with this bb code ?

[elsa23]

Hi, i used this bb code in a phpbb board
after migration to vbulltin

when i create the bbcode, all bbcode no longer display in editor

What is wrong with this bb code ?

Replacement :
<a href="{param}" target="_blank"><img src="images/b-actu/b-caps1.png" style="vertical-align:middle" border="0" onclick="this.src='images/b-actu/b-caps3.png'" onmouseover="this.src = 'images/b-actu/b-caps2.png'" onmouseout="this.src = 'images/b-actu/b-caps1.png'" /></a>

thanks in adavnce

--------------- Added 1484879906 at 1484879906 ---------------

any help please https://vborg.vbsupport.ru/external/2017/04/2.gif

[bzcomputers]

Try this:
<a href="{param}" target="_blank"><img src="images/b-actu/b-caps1.png" style="vertical-align:middle" border="0" onclick="this.src='images/b-actu/b-caps3.png';" onmouseover="this.src = 'images/b-actu/b-caps2.png';" onmouseout="this.src = 'images/b-actu/b-caps1.png';" /></a>

Add semi-colons between the 3 instances where your single and double quotes are adjacent to each other.