Showing Formula-Based PV Value in Tooltip in Phoebus Display Builder

[Varuna Crishan Meddage via Tech-talk <tech-talk at aps.anl.gov>]

Hi,

I am using a Progress Bar object in my Phoebus GUI. 

Here in PV name field, instead of using a PV, I am using the following formula. (Which is showing RAM usage as a percentage)

=((`PIP2:TIME_CTRL_WRSWITCH:2_1001_20_calc_ram_total` - `PIP2:TIME_CTRL_WRSWITCH:2_1001_21_ram_free`)/`PIP2:TIME_CTRL_WRSWITCH:2_1001_20_calc_ram_total`)*100

Here, I want to show only the formula "raw value and a percentage sign" in the Tool tip section.

Any help to achieve this goal ?

Thanks

Varuna Meddage