diff --git a/db_inp/db b/db_inp/db
new file mode 100644
index 0000000..e69de29
diff --git a/epanet/epanet.py b/epanet/epanet.py
index 42199dc..e1cd950 100644
--- a/epanet/epanet.py
+++ b/epanet/epanet.py
@@ -1,11 +1,15 @@
 import ctypes
 import platform
 import os
+import sys 
+sys.path.append("..") 
+from api import project
+from api import parser
 
 _lib_core = None
 _lib_output = None
 
-def load_epanet():
+def _load_epanet():
     _platform = platform.system()
     if _platform != "Windows":
         raise Exception(f'Platform {_platform} unsupported (not yet)')
@@ -15,19 +19,25 @@ def load_epanet():
     #print(f'Load EPANET {version}')
     _lib_output = ctypes.CDLL("./epanet-output.dll")
 
-
 # readable True => json, False => binary output
-def run_epanet(project: str, readable: bool = True) -> str:
+def run_project(name: str, readable: bool = True) -> str:
+    if not project.have_project(name):
+        raise Exception("No such project!")
+
     dir = os.path.dirname(os.getcwd())
+
+    db_inp = os.path.join(os.path.join(dir, 'db_inp'), name + '.inp')
+    parser.dump_inp(name, db_inp)
+    
     exe = os.path.join(os.path.join(dir, 'epanet'), 'runepanet.exe')
-    inp = os.path.join(os.path.join(dir, 'inp'), project + '.inp')
-    rpt = os.path.join(os.path.join(dir, 'temp'), project + '.rpt')
-    opt = os.path.join(os.path.join(dir, 'temp'), project + '.opt')
+    inp = os.path.join(os.path.join(dir, 'db_inp'), name + '.inp')
+    rpt = os.path.join(os.path.join(dir, 'temp'), name + '.rpt')
+    opt = os.path.join(os.path.join(dir, 'temp'), name + '.opt')
     command = f'{exe} {inp} {rpt} {opt}'
-    print(command)
-    os.popen(command)
+    #print(command)
+    result = os.system(command)
     return ''
 
 if __name__ == '__main__':
-    load_epanet()
-    run_epanet('net3')
+    _load_epanet()
+    run_project('net3')