STP to determin user groups

[metalray]

Hi Guys,
I want to build a SQL that goes to an Oracle View that is executed in various ways depending on the SAS user groups.
Now, I found this piece of code that gets me all users names togehter with IDs and their groups. nice. but I only want to get the user groups of the user that is executing the STP (as part of a web report). could someone help because I am uncertain if in this case _metauser will do the trick or not.

data users_grps;
length uri name group groupuri $256 id $20;

/* Initialize variables to missing. */
n=1;
uri='';
name='';
group='';
groupuri='';
id='';

*Determine how many person objects are defined.;
nobj=metadata_getnobj("omsobj:Person?@Id contains '.'",n,uri);
if nobj=0 then put 'No Persons available.';

else do while (nobj > 0);

/* Retrieve the current person's name. */
rc=metadata_getattr(uri, "Name", Name);

/* Get the group association information for the current person. */
a=1;
grpassn=metadata_getnasn(uri,"IdentityGroups",a,groupuri);

/* If this person does not belong to any groups, set their group */
/* variable to 'No groups' and output the name. */
if grpassn in (-3,-4) then do;
group="No groups";
output;
end;

/* If the person belongs to any groups, loop through the list */
/* and retrieve the name of each group, outputting each on a */
/* separate record. */
else do while (grpassn > 0);
rc2=metadata_getattr(groupuri, "Name", group);
a+1;
output;
grpassn=metadata_getnasn(uri,"IdentityGroups",a,groupuri);
end;

/* Retrieve the next person's information. */
n+1;
nobj=metadata_getnobj("omsobj:Person?@Id contains '.'",n,uri);
end;
keep name group;
run;

[metalray]

the stp is actually in an information map. so the current executor of the stp->information map -> web report is what I am looking for . I have done the same thing with PROC OLAP and in that case its enough to "just" write a connection string without any user credentials.
but know I actually need it in the code to have a IF---ELSE and use the "correct" proc sql depending on the user group(s).

it is not the groups yet but just the username:
%let uid_var=corp\%sysfunc(scan(“&_METAUSER”,1,“@”)));
WARNING: Apparent symbolic reference _METAUSER not resolved.

[metalray]

It would be great if I could use SAS.IdentityGroups in the STP.