diff --git a/README.md b/README.md
index abcc09e9fff30e848152c479d58a7a750f300afc..16dc8c320ffc06a1c5d7484497a07bab52fd02a0 100644
--- a/README.md
+++ b/README.md
@@ -9,8 +9,8 @@ pip install git+https://gitlab.dkrz.de/data-infrastructure-services/tzis.git#egg
 
 ## Usage Example
 
-```
-from tzis import tzis
+```python
+from tzis import *
 import glob
 
 #set credentials, tzis will ask for a password
@@ -30,33 +30,48 @@ target_mb = 10
 
 #
 
-#token=tzis.create_token("dkrz",project,user)
-token=tzis.get_token("dkrz",project,user)
-
-container = tzis.Tzis(token["OS_STORAGE_URL"],
-                      token["OS_AUTH_TOKEN"],
-                      container_name,
-                      os_name=prefix_for_object_storage,
-                      mf_dset=glob.glob(path_var),
-                      varname=varname,
-                      verbose=True,
-                      open_kwargs=dict(
-                          chunkdim=chunkdim,
-                          target_mb=target_mb
-                      )
+token=swifthandling.get_token(
+    "dkrz",
+    project,
+    user
+)
+
+fsmap=swifthandling.get_swift_mapper(
+    token["OS_STORAGE_URL"],
+    token["OS_AUTH_TOKEN"],
+    container_name,
+    os_name=prefix_for_object_storage
+)
+
+omo = openmf.open_mfdataset_optimized(
+    glob.glob(path_var),
+    varname,
+    fsmap,
+    chunkdim=chunkdim,
+    target_mb=target_mb
 )
 
-container.write_zarr(chunkdim=chunkdim,
-                       startchunk=0,
-                       validity_check=False,
-                       maxretries=3)
+outstore=tzis.write_zarr(
+    omo.target_fsmap,
+    omo.mf_dset,
+    omo.varname,
+    verbose=True,
+    target_mb=0
+)
+
+xr.open_zarr(
+    outstore,
+    consolidated=True
+)
+             
                       
-container.write_catalog(catalogname="catalog.json",
-                      pattern=None,
-                      delim=".",
-                      columns=None,
-                      mode="a"
-                     )
+catalog.write_catalog(
+    catalogname="catalog.json",
+    pattern=None,
+    delim=".",
+    columns=None,
+    mode="a"
+)
 
 ```