Good Morning Everton.
In SC/Catalog/Forms/Forms, open a form.
Add a 'Label' component on it and for this 'Label' component set:
Name='Label Text' with the following 'Value':
<marquee BEHAVIOR=SLIDE style="height:20;width:100" scrollamount="200" scrolldelay="1500">Blinking Text!</marquee>
<marquee BEHAVIOR=SCROLL style="height:20;width:100" scrollamount="200" scrolldelay="1500">Blinking Text!</marquee>
<marquee BEHAVIOR=ALTERNATE style="height:20;width:100" scrollamount="200" scrolldelay="1500">Blinking Text!</marquee>
<marquee BEHAVIOR=ALTERNATE DIRECTION=LEFT style="height:20;width:100" scrollamount="200" scrolldelay="1500">Blinking Text!</marquee>
<marquee BEHAVIOR=ALTERNATE DIRECTION=RIGHT style="height:20;width:100" scrollamount="200" scrolldelay="1500">Blinking Text!</marquee>
PS1.
The label-text of a form-component can not be set to blink, from within the 'rename' of that text.
PS2.
As googling for this, I came across the following(more than once):
The <blink> tag was never an official standard, and is now completely abandoned by all browsers.
Also in Google, alternatives like 'CSS' and 'SCRIPTING' can be found.
Kind regards, Louis.