Using a search base with inputlookup, how do I add a static value to the data set so "All" is the first value in the drop-down?

I've basically created a base search and am using it with a lookup. The results of the base search are all my regions. However, I want to have an "All" option in the drop-down without updating the lookup table as it's generated hourly. [...] Regiontruefalse| table abc_regionabc_regionabc_region Can someone assist me with adding a static value to this data set so that "All" is the first value in the drop-down?