I'm trying to create an ecosystem where the plants and objects used only appear at the highest altitude....can anyone help?  I am using Vue 5 infinite.

Thanks, 
Frank

Check the parameters for Influence from Foreign Objects in your ecosystem.

It is probable that you are trying to populate a terrain set above the default ground plane. If your have a high value for Influence from Foreign Objects, your ecosystem will not populate close to the ground level.

Use mixed materials, even if you use the same material for the second material, and make the mixing altitude dependent. Then populate the higher material.

Attached Link: Reference Image Palm Island!

In the Advanced Materials Editor, under the tab named Environment, in the Group Attribute named Altitude constraint, I changed the setting of attribute named Altitude range to +.40 1.00.  The original setting -1.00 +1.00 setting is relative to the terrain you want to edit.  The first figure represents the bottom of the terrain, and the second figure represents the topmost part of the terrain.  Since My island was only about 100 feet high I changed the setting from -1.00 to +.40 and once populated all of the eco items lay on the topmost part of my island.  You may also have to change the Slop constraint if you have a gradual falloff on the terrain.