converting text box prompt values to uppercase

[karthik.cognos]

I have a prompt page that includes a Text Prompt and need to ensure that the data entered is converted to uppercase to match the data in the database.
Any ideas how I can convert the text entered in the prompt to uppercase?
Users will be entering multiple values in the Text Box Prompt

[rockytopmark]

UPPER([QueryItem]) = UPPER(?param?)

[karthik.cognos]

When I do this my prompt gets changed to single select instead of multi select. Any further thoughts would be appreciated...

[bonniehsueh]

instead of the equal sign use 'in'

UPPER([QueryItem]) in UPPER(?param?)

[karthik.cognos]

When I do that my prompt gets displayed in a different manner...The right part (box) & the insert & remove buttons disappear...Any thoughts??