executing buffer geometry service for several featurelayers in one execution

[DIALLOAbdoulaye]

hello everyone ,

i am looking for a way to execute buffer geometry service for several featurelayer.

In fact i have four (4)  featurelayer and i want create a buffer around the graphic  in one execution .

To remind that the radius is variable:

for the graphics in featurelayer 1    = > R1

for the graphics in featurelayer 2   = >  R2

for the graphics in featurelayer 3   =>   R3

for the graphics in featurelayer 4   = >  R4

Does anyone know how to perform that in one execution ?

Thanks in advance  for anyhelp .