added LSL2 stored procedures

LSL2/STPROC/TW_ACCT_VALID.txt

@@ -0,0 +1,31 @@
+SUBROUTINE TW_ACCT_VALID(ConvType, DataIo, SubrLabel, ReturnedValue)
+*
+begin condition
+pre:
+post:
+end condition
+declare function get_property
+$insert logical
+
+
+equ valid$         to 0    ;* successful
+equ invalid_msg$   to 1    ;* bad data       -   print error message window
+equ invalid_conv$  to 2    ;* bad conversion -          "         "
+equ invalid_nomsg$ to 3    ;* bad but do not print the error message window
+
+status() = Valid$
+begin case
+   case ConvType = 'ICONV'
+   	  ValidArray = get_property( @window, '@ValidArray', ValidArray )
+   	  SelPos = get_property( @window:'.TW_INFO', 'SELPOS' )
+   	  Col = SelPos<1>
+   	  Row = SelPos<2>
+   	  if ValidArray<Row,Col> = 1 then
+   	     DataIo = ''
+   	     status() = valid$
+   	  end
+   case ConvType = 'OCONV'
+   case otherwise$
+        status() = invalid_msg$
+end case
+return