# Sending test ether on Testrpc

I'm using Truffle Version 2.1 and I'm trying to send test ether to my contract using Testrpc. I run testrpc -u 0 -u 1
And the accounts shows a balance of 99351632199997083360 wei I'm trying to send Ether to a function that contains the payable modifier and returns true (no inner code), and it is returning with a VM jump.

    function fund() payable returns (bool) {

return true;
}


And this is the truffle javascript calling the function

var projectBeingFunded = Project.at(projectToFund);
return projectBeingFunded.fund({from: account, amount:amountToGive});
}).then(function(txHash) {
waitForTransaction();
return web3.eth.getTransactionReceipt(txHash);
}).then(function(receipt) {
console.log("transaction receipt");
console.log(receipt.valueOf());
setStatus("Project successfully funded");
}).catch(function(e) {
console.log(e);
setStatus("Project funding didn't work");


You're submitting an argument called amount, not a payment in Ether.

return projectBeingFunded.fund({from: account, amount:amountToGive});


That would almost be appropriate if the contract function read:

function fund(uint amount) returns(bool) {}


Would actually be:

return projectBeingFunded.fund(amountToGive, {from: account});


But it actually says no arguments are expected, and ETH is expected:

function fund() payable returns (bool) { ...


The unexpected argument is a JUMP. So, try this:

return projectBeingFunded.fund({from: account, value: amountToGive});


Where amountToGive is a uint in Wei and the sender has that much money, as I assume is the case.

Hope it helps.

• Upon a closer look, I realized there is indeed a problem with the original syntax causing the JUMP but I didn't describe it very well. Corrected to avoid misleading you and others. – Rob Hitchens - B9lab Feb 21 '17 at 19:24
• what if I want to call this function function fund() payable returns (bool) from inside another contract in solidity? – bturner Sep 26 '17 at 17:11