Multiple values from same txt file

I've been using this script to load values separated by new line from files to send requests with different values.

def size 
File valueFile = new File("C:\\values\\myValueFile.txt")
File valueFile2 = new File("C:\\values\\myValueFile2.txt")
List lines = valueFile.readLines()
List lines2 = valueFile2.readLines()
size = lines.size.toInteger()
def myProps = testRunner.testCase.getTestStepByName("MyProperties") 

for( counter in 0..size-1) 
{
tempValue = lines[counter]
tempValue2 = lines2[counter]
myProps.setPropertyValue("Value", tempValue)
myProps.setPropertyValue("Value2", tempValue2)
log.info tempValue
log.info tempValue2
testRunner.runTestStepByName("updateBusinessTrip")
}

How to make it load values from same file separated by ";"? txt file would look like that:

Value1;Value2
Value1.1;Value2.1
Value1.2;Value2.2