this works in DBPro and I think you should be able to convert it work in GDK or see what you might be doing wrong.
Shows a big blob that is drop form a height.
GDK might be able to change the color as we can't in DBPro, you could use the direct C++ method to change its color.
Rem ***** Main Source File *****
Sync On
sync rate 60
Autocam Off
Set Display Mode 800, 600, 32, 1
Color Backdrop RGB(0,128,64)
Phy Start
Make Object Box 1, 50.0, 1.0, 50.0
color object 1,RGB(128,128,20)
Phy Make Rigid Body Static box 1
make light 1
position light 1,15,25,15
color light 1,RGB(0,0,255)
set ambient light 20
color ambient light rgb(0,0,255)
point light 1,0,0,0
fluidID = 2
prop = 3
phy make fluid fluidID
phy set fluid position fluidID, 0, 30, 00
phy set fluid viscosity fluidID, 50
phy set fluid damping fluidID, 0.5
phy set fluid particle buffer cap fluidID,5000
phy build fluid fluidID
Position Camera 0.0, 15.0, -50.0
point camera 0,0,0
`Phy Update 0
do
if Spacekey()
Make Object Cube prop, 5.0
Position Object prop, sin(prop*15)*25.0, 30.0, cos(prop*15)*25.0
Phy Make Rigid Body Dynamic Box prop
inc prop
endif
Phy Update
Sync
loop
Dark Physics makes any hot drink go cold.