(solved)how do i make a bar glow while hovered

[SONTSE]

When a bar evaluates Preferences values, it has a thumb and glows (gets lighter color) while hovered,
but when there is custom variable instead -- it gets more simple, with no thumb, and doesn't glow while hovered,
and i want it to look the same. how do i do this? how do i control colors of my bar?
docs were kinda unclear to this issue (of maybe it's just me)
Thanks

[rayminator]

can you post your code so we can help better

[SONTSE]

can you post your code so we can help better

Code: Select all

default persistent.custom_value = .8

screen these_bars_have_to_be_identical:
    frame:
        margin(5,5)
        padding(5,5)
        xsize 300
        ysize 300
        align (.5,.5)
        has vbox
        text 'Lower bar has to be same as upper bar'
        null height 10
        text 'The upper bar'
        bar value Preference('music volume')
        null height 10
        text 'The lower bar'
        bar value FieldValue(persistent,'custom_value',1.0,step=.01)


label main_menu:
    return
label start:
    call screen these_bars_have_to_be_identical
    return

[IrinaLazareva]

try to replace

Code: Select all

        bar value FieldValue(persistent,'custom_value',1.0,step=.01)

to

Code: Select all

        bar value FieldValue(persistent,'custom_value',1.0,step=.01) style 'pref_slider'

[SONTSE]

try to replace

Code: Select all

        bar value FieldValue(persistent,'custom_value',1.0,step=.01)

to

Code: Select all

        bar value FieldValue(persistent,'custom_value',1.0,step=.01) style 'pref_slider'

Yep, that's work. Thank you, IrinaLazareva!