e.g.
IBM_JAVA_OPTIONS=-Xmx256m increases the maximum heap size (so my sequential file is being read and setting options)

but
IBM_JAVA_OPTIONS=-Xms16m -Xmx256m does not (maximum heap size remains at the default of 64m)

I have tried the following without success:
enclosing the options in double quotes, exporting the variable, using another variable like IJO and then $IJO, and separating options with commas.
Does anyone know how I can get multiple IBM_JAVA_OPTIONS to be recognized at the startup of the JVM?
Thanks!