Birth particles on genarated bricks surface

[yuryb2cu]

Hi, I'm having troubles to birth particles on the surface of generated bricks 
I try inside the same flow or even in a different flow but the new particles does not recognize the bricks shapes to place other particles 
Is possible to birth particles and position it on the surface of the bricks without exporting the bricks meshes?

[d4rk3lf]

Two ways I can think of:
1) You can use spawn operator, and within it's option, check to spawn on shape (or surface), rather then in center
2) You can add mesh operator, disable the "render only" switch. Now create second flow, and just pick first flow in position object operator.

[yuryb2cu]

Two ways I can think of:
1) You can use spawn operator, and within it's option, check to spawn on shape (or surface), rather then in center
2) You can add mesh operator, disable the "render only" switch. Now create second flow, and just pick first flow in position object operator.

Both methods works fine, the second one allows more control in particles placement 
Thank you very much¡¡¡