fix string logic

Author: danielasay

dwiqc/tasks/qsiprep_EQ.py

@@ -111,7 +111,7 @@ def build(self):
 
 	def match_bval(self, dir_path):
 		for file in os.listdir(dir_path):
-			if file.endswith('.bval') and self._run in file:
+			if file.endswith('.bval') and str(self._run) in file:
 				return file